VM initialization refactoring.

src/platform.h

Index: src/platform.h
diff --git a/src/platform.h b/src/platform.h
index a5b804e311ea33b33e84aaa59a809a1fb3dcd645..fea16c8d471a4b6c9aca94dc0eb09ce742962d60 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -508,10 +508,10 @@ class Mutex {
 
 
 // ----------------------------------------------------------------------------
-// ScopedLock/ScopedUnlock
+// ScopedLock
 //
-// Stack-allocated ScopedLocks/ScopedUnlocks provide block-scoped
-// locking and unlocking of a mutex.
+// Stack-allocated ScopedLocks provide block-scoped locking and
+// unlocking of a mutex.
 class ScopedLock {
  public:
   explicit ScopedLock(Mutex* mutex): mutex_(mutex) {