syscall: make //sys lines not doc comments

If they are doc comments then gofmt will put a space between // and sys.
Most of syscall was already this way, following CL 7324056 (in 2013).
These were not.

Change-Id: Ie6ebf82809c199d0d06b87c86045bbb62b687d5f
Reviewed-on: https://go-review.googlesource.com/c/go/+/407136
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>

src/syscall/syscall_aix.go

@@ -65,6 +65,7 @@ func Access(path string, mode uint32) (err error) {
 //sys	Dup2(old int, new int) (err error)
 
 //sysnb pipe(p *[2]_C_int) (err error)
+
 func Pipe(p []int) (err error) {
 	if len(p) != 2 {
 		return EINVAL
@@ -79,12 +80,14 @@ func Pipe(p []int) (err error) {
 }
 
 //sys	readlink(path string, buf []byte, bufSize uint64) (n int, err error)
+
 func Readlink(path string, buf []byte) (n int, err error) {
 	s := uint64(len(buf))
 	return readlink(path, buf, s)
 }
 
 //sys	utimes(path string, times *[2]Timeval) (err error)
+
 func Utimes(path string, tv []Timeval) error {
 	if len(tv) != 2 {
 		return EINVAL
@@ -93,6 +96,7 @@ func Utimes(path string, tv []Timeval) error {
 }
 
 //sys	utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
+
 func UtimesNano(path string, ts []Timespec) error {
 	if len(ts) != 2 {
 		return EINVAL
@@ -101,6 +105,7 @@ func UtimesNano(path string, ts []Timespec) error {
 }
 
 //sys	unlinkat(dirfd int, path string, flags int) (err error)
+
 func Unlinkat(dirfd int, path string) (err error) {
 	return unlinkat(dirfd, path, 0)
 }
@@ -206,11 +211,13 @@ func sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
 }
 
 //sys	getdirent(fd int, buf []byte) (n int, err error)
+
 func ReadDirent(fd int, buf []byte) (n int, err error) {
 	return getdirent(fd, buf)
 }
 
 //sys  wait4(pid _Pid_t, status *_C_int, options int, rusage *Rusage) (wpid _Pid_t, err error)
+
 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
 	var status _C_int
 	var r _Pid_t
@@ -228,6 +235,7 @@ func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int,
 }
 
 //sys	fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range
+
 func Fsync(fd int) error {
 	return fsyncRange(fd, O_SYNC, 0, 0)
 }
@@ -313,6 +321,7 @@ func Getsockname(fd int) (sa Sockaddr, err error) {
 }
 
 //sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
+
 func Accept(fd int) (nfd int, sa Sockaddr, err error) {
 	var rsa RawSockaddrAny
 	var len _Socklen = SizeofSockaddrAny

src/syscall/syscall_dragonfly.go

@@ -127,11 +127,13 @@ func Pipe2(p []int, flags int) (err error) {
 }
 
 //sys	extpread(fd int, p []byte, flags int, offset int64) (n int, err error)
+
 func pread(fd int, p []byte, offset int64) (n int, err error) {
 	return extpread(fd, p, 0, offset)
 }
 
 //sys	extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error)
+
 func pwrite(fd int, p []byte, offset int64) (n int, err error) {
 	return extpwrite(fd, p, 0, offset)
 }

src/syscall/syscall_netbsd.go

@@ -112,6 +112,7 @@ func Pipe(p []int) (err error) {
 }
 
 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
+
 func Pipe2(p []int, flags int) error {
 	if len(p) != 2 {
 		return EINVAL
@@ -126,6 +127,7 @@ func Pipe2(p []int, flags int) error {
 }
 
 //sys paccept(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, sigmask *sigset, flags int) (nfd int, err error)
+
 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
 	var rsa RawSockaddrAny
 	var len _Socklen = SizeofSockaddrAny
@@ -145,6 +147,7 @@ func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
 }
 
 //sys getdents(fd int, buf []byte) (n int, err error)
+
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
 	return getdents(fd, buf)
 }

src/syscall/syscall_openbsd.go

@@ -70,6 +70,7 @@ func Pipe(p []int) error {
 }
 
 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
+
 func Pipe2(p []int, flags int) error {
 	if len(p) != 2 {
 		return EINVAL
@@ -84,6 +85,7 @@ func Pipe2(p []int, flags int) error {
 }
 
 //sys	accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
+
 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
 	var rsa RawSockaddrAny
 	var len _Socklen = SizeofSockaddrAny
@@ -103,6 +105,7 @@ func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
 }
 
 //sys getdents(fd int, buf []byte) (n int, err error)
+
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
 	return getdents(fd, buf)
 }

src/syscall/syscall_plan9.go

@@ -181,6 +181,7 @@ func Write(fd int, p []byte) (n int, err error) {
 var ioSync int64
 
 //sys	fd2path(fd int, buf []byte) (err error)
+
 func Fd2path(fd int) (path string, err error) {
 	var buf [512]byte
 
@@ -192,6 +193,7 @@ func Fd2path(fd int) (path string, err error) {
 }
 
 //sys	pipe(p *[2]int32) (err error)
+
 func Pipe(p []int) (err error) {
 	if len(p) != 2 {
 		return NewError("bad arg in system call")
@@ -260,6 +262,7 @@ func (w Waitmsg) ExitStatus() int {
 }
 
 //sys	await(s []byte) (n int, err error)
+
 func Await(w *Waitmsg) (err error) {
 	var buf [512]byte
 	var f [5][]byte
@@ -379,42 +382,49 @@ func Getgroups() (gids []int, err error) {
 }
 
 //sys	open(path string, mode int) (fd int, err error)
+
 func Open(path string, mode int) (fd int, err error) {
 	fixwd(path)
 	return open(path, mode)
 }
 
 //sys	create(path string, mode int, perm uint32) (fd int, err error)
+
 func Create(path string, mode int, perm uint32) (fd int, err error) {
 	fixwd(path)
 	return create(path, mode, perm)
 }
 
 //sys	remove(path string) (err error)
+
 func Remove(path string) error {
 	fixwd(path)
 	return remove(path)
 }
 
 //sys	stat(path string, edir []byte) (n int, err error)
+
 func Stat(path string, edir []byte) (n int, err error) {
 	fixwd(path)
 	return stat(path, edir)
 }
 
 //sys	bind(name string, old string, flag int) (err error)
+
 func Bind(name string, old string, flag int) (err error) {
 	fixwd(name, old)
 	return bind(name, old, flag)
 }
 
 //sys	mount(fd int, afd int, old string, flag int, aname string) (err error)
+
 func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
 	fixwd(old)
 	return mount(fd, afd, old, flag, aname)
 }
 
 //sys	wstat(path string, edir []byte) (err error)
+
 func Wstat(path string, edir []byte) (err error) {
 	fixwd(path)
 	return wstat(path, edir)