My clang now doesn't complain about !"foo".

BUG=
R=robertphillips@google.com

Review URL: https://codereview.chromium.org/22875037

git-svn-id: http://skia.googlecode.com/svn/trunk@10874 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/utils/SkLua.cpp b/src/utils/SkLua.cpp
index 427093b..767e177 100644
--- a/src/utils/SkLua.cpp
+++ b/src/utils/SkLua.cpp
@@ -906,7 +906,7 @@
         case SkRRect::kSimple_Type: return "simple";
         case SkRRect::kComplex_Type: return "complex";
     }
-    SkASSERT(!"never get here");
+    SkDEBUGFAIL("never get here");
     return "";
 }