all: simplify bool conditions

Change-Id: Id2079f7012392dea8dfe2386bb9fb1ea3f487a4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/526015
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>

src/crypto/sha1/fallback_test.go

@@ -16,7 +16,7 @@ import (
 // implementation cannot be used.
 // See also TestBlockGeneric.
 func TestGenericPath(t *testing.T) {
-	if useAsm == false {
+	if !useAsm {
 		t.Skipf("assembly implementation unavailable")
 	}
 	useAsm = false

src/crypto/sha512/fallback_test.go

@@ -16,7 +16,7 @@ import (
 // implementation cannot be used.
 // See also TestBlockGeneric.
 func TestGenericPath(t *testing.T) {
-	if useAsm == false {
+	if !useAsm {
 		t.Skipf("assembly implementation unavailable")
 	}
 	useAsm = false

src/database/sql/sql_test.go

@@ -3769,7 +3769,7 @@ func TestIssue18719(t *testing.T) {
 		cancel()
 
 		// Wait for the context to cancel and tx to rollback.
-		for tx.isDone() == false {
+		for !tx.isDone() {
 			time.Sleep(pollDuration)
 		}
 	}

src/math/big/arith_s390x_test.go

@@ -15,7 +15,7 @@ import (
 // vector-capable machine
 
 func TestFunVVnovec(t *testing.T) {
-	if hasVX == true {
+	if hasVX {
 		for _, a := range sumVV {
 			arg := a
 			testFunVV(t, "addVV_novec", addVV_novec, arg)

src/net/http/response_test.go

@@ -849,7 +849,7 @@ func TestReadResponseErrors(t *testing.T) {
 	type testCase struct {
 		name    string // optional, defaults to in
 		in      string
-		wantErr any // nil, err value, or string substring
+		wantErr any // nil, err value, bool value, or string substring
 	}
 
 	status := func(s string, wantErr any) testCase {