Restrict fixit for missing 'class' in template template parameters.

Based on Doug's feedback to r153887 this omits the FixIt if the following token
isn't syntactically valid for the context. (not a comma, '...', identifier,
'>', or '>>')

There's a bunch of work to handle the '>>' case, but it makes for a much more
pleasant diagnostic in this case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154163 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/FixIt/fixit.cpp b/test/FixIt/fixit.cpp
index c61902d..e6701ad 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 {{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}}
+template<template<typename> Foo, // expected-error {{template template parameters require 'class' after the parameter list}}
+         template<typename> typename Bar, // expected-error {{template template parameters require 'class' after the parameter list}}
+         template<typename> struct Baz> // expected-error {{template template parameters require 'class' after the parameter list}}
 void func();