Improve & simplify diagnostic for missing 'class' in template template parameter.

Change suggested by Sebastian Redl on review feedback from r153887.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154102 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/FixIt/fixit.cpp b/test/FixIt/fixit.cpp
index c881c63..c61902d 100644
--- a/test/FixIt/fixit.cpp
+++ b/test/FixIt/fixit.cpp
@@ -200,7 +200,7 @@
   return Mystery<T>::get();
 }
 
-template<template<typename> Foo, // expected-error {{expected 'class' before 'Foo'}}
-         template<typename> typename Bar, // expected-error {{expected 'class' instead of 'typename'}}
-         template<typename> struct Baz> // expected-error {{expected 'class' instead of 'struct'}}
+template<template<typename> Foo, // expected-error {{template template parameters require 'class' after the argument list}}
+         template<typename> typename Bar, // expected-error {{template template parameters require 'class' after the argument list}}
+         template<typename> struct Baz> // expected-error {{template template parameters require 'class' after the argument list}}
 void func();