Bug 654346: Fix C++-style comments in mfbt headers included by .c files, to...

Bug 654346: Fix C++-style comments in mfbt headers included by .c files, to fix build warnings. r=cjones comment-only=DONTBUILD

mfbt/Types.h

@@ -88,4 +88,4 @@
 #define MOZ_BEGIN_EXTERN_C     JS_BEGIN_EXTERN_C
 #define MOZ_END_EXTERN_C       JS_END_EXTERN_C
 
-#endif  // mozilla_Types_h_
+#endif  /* mozilla_Types_h_ */

mfbt/Util.h

@@ -74,7 +74,7 @@ MOZ_END_EXTERN_C
 
 # define MOZ_ASSERT(expr_) ((void)0)
 
-#endif  // DEBUG
+#endif  /* DEBUG */
 
 #ifdef __cplusplus