Add a return statement to the func with an int return type.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195897 91177308-0d34-0410-b5e6-96231b3b80d8

test/SemaTemplate/instantiate-local-class.cpp

@@ -178,5 +178,6 @@ namespace PR14373 {
   };
   int call() {
     exec_func(Type());
+    return 0;
   }
 }