Fixing whitespace problems

llvm-svn: 111751
diff --git a/libcxx/src/mutex.cpp b/libcxx/src/mutex.cpp
index fa1e7a0..e187d8c 100644
--- a/libcxx/src/mutex.cpp
+++ b/libcxx/src/mutex.cpp
@@ -223,7 +223,7 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
         try
         {
-#endif
+#endif  // _LIBCPP_NO_EXCEPTIONS
             flag = 1;
             pthread_mutex_unlock(&mut);
             func(arg);
@@ -241,7 +241,7 @@
             pthread_cond_broadcast(&cv);
             throw;
         }
-#endif
+#endif  // _LIBCPP_NO_EXCEPTIONS
     }
     else
         pthread_mutex_unlock(&mut);