Clean up and document code modification hints.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65641 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index 97eb9be..5b2e89e 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -1617,7 +1617,7 @@
   // template<> headers.
   if (TemplateParameterLists.size() == 0)
     Diag(KWLoc, diag::err_template_spec_needs_header)
-      << CodeInsertionHint(KWLoc, "template<> ");
+      << CodeModificationHint::CreateInsertion(KWLoc, "template<> ");
   else {
     TemplateParameterList *TemplateParams 
       = static_cast<TemplateParameterList*>(*TemplateParameterLists.get());