From 2e3dc2cc352fbf006af492f2d5a75d28194e7202 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Tue, 13 Jul 2010 12:37:47 -0700
Subject: [PATCH] crypto/rand: add missing Unlock

R=r
CC=golang-dev
https://golang.org/cl/1812043
---
 src/pkg/crypto/rand/rand_unix.go    | 1 +
 src/pkg/crypto/rand/rand_windows.go | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/pkg/crypto/rand/rand_unix.go b/src/pkg/crypto/rand/rand_unix.go
index d8db6f2a041..ff16f25547f 100644
--- a/src/pkg/crypto/rand/rand_unix.go
+++ b/src/pkg/crypto/rand/rand_unix.go
@@ -32,6 +32,7 @@ func (r *devReader) Read(b []byte) (n int, err os.Error) {
 	if r.f == nil {
 		f, err := os.Open(r.name, os.O_RDONLY, 0)
 		if f == nil {
+			r.mu.Unlock()
 			return 0, err
 		}
 		r.f = f
diff --git a/src/pkg/crypto/rand/rand_windows.go b/src/pkg/crypto/rand/rand_windows.go
index 9bab2cba888..4b2b7a26f37 100755
--- a/src/pkg/crypto/rand/rand_windows.go
+++ b/src/pkg/crypto/rand/rand_windows.go
@@ -30,6 +30,7 @@ func (r *rngReader) Read(b []byte) (n int, err os.Error) {
 		const flags = syscall.CRYPT_VERIFYCONTEXT | syscall.CRYPT_SILENT
 		ok, errno := syscall.CryptAcquireContext(&r.prov, nil, nil, provType, flags)
 		if !ok {
+			r.mu.Unlock()
 			return 0, os.NewSyscallError("CryptAcquireContext", errno)
 		}
 	}