Fix warnings about unused function on Mac.

Review URL: https://codereview.appspot.com/6826074/



git-svn-id: http://skia.googlecode.com/svn/trunk@6976 2bbb7eff-a529-9590-31e7-b0007b416f81

include/core/SkPostConfig.h

@@ -76,10 +76,8 @@
  */
 #if !defined(SkNO_RETURN_HINT)
     #if SK_HAS_COMPILER_FEATURE(attribute_analyzer_noreturn)
-        namespace {
-            inline void SkNO_RETURN_HINT() __attribute__((analyzer_noreturn));
-            inline void SkNO_RETURN_HINT() {}
-        }
+        static inline void SkNO_RETURN_HINT() __attribute__((analyzer_noreturn));
+        static inline void SkNO_RETURN_HINT() {}
     #else
         #define SkNO_RETURN_HINT() do {} while (false)
     #endif