fixed another clang++ compiler error



git-svn-id: http://skia.googlecode.com/svn/trunk@4382 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrSWMaskHelper.h b/src/gpu/GrSWMaskHelper.h
index b789f99..00bf323 100644
--- a/src/gpu/GrSWMaskHelper.h
+++ b/src/gpu/GrSWMaskHelper.h
@@ -60,4 +60,4 @@
     typedef GrNoncopyable INHERITED;
 };
 
-#endif GrSWMaskHelper_DEFINED
+#endif // GrSWMaskHelper_DEFINED