Avoid storing references to temporary strings in RenameFunction

Issue=360
Review URL: https://codereview.appspot.com/6483045/


git-svn-id: https://angleproject.googlecode.com/svn/trunk@1266 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/compiler/RenameFunction.h b/src/compiler/RenameFunction.h
index cfdb40d..3908bfd 100644
--- a/src/compiler/RenameFunction.h
+++ b/src/compiler/RenameFunction.h
@@ -29,8 +29,8 @@
     }
 
 private:
-    const TString& mOldFunctionName;
-    const TString& mNewFunctionName;
+    const TString mOldFunctionName;
+    const TString mNewFunctionName;
 };
 
 #endif  // COMPILER_RENAME_FUNCTION