Fix minor typos in platform-*.cc

src/platform-posix.cc

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-// Platform specific code for POSIX goes here. This is not a platform on its
-// own but contains the parts which are the same across POSIX platforms Linux,
-// Mac OS, FreeBSD and OpenBSD.
+// Platform-specific code for POSIX goes here. This is not a platform on its
+// own, but contains the parts which are the same across the POSIX platforms
+// Linux, MacOS, FreeBSD, OpenBSD, NetBSD and QNX.
 
 #include <dlfcn.h>
 #include <pthread.h>
 #if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__)
 #include <pthread_np.h>  // for pthread_set_name_np
 #endif
 #include <sched.h>  // for sched_yield
 #include <unistd.h>
 #include <errno.h>
 #include <time.h>
@@ skipping 735 matching lines @@
 
 void Thread::SetThreadLocal(LocalStorageKey key, void* value) {
   pthread_key_t pthread_key = LocalKeyToPthreadKey(key);
   int result = pthread_setspecific(pthread_key, value);
   ASSERT_EQ(0, result);
   USE(result);
 }
 
 
 } }  // namespace v8::internal