Fix refersToDeclaration()-matcher and add missing test case. This was
broken as of r164656 as TemplateArgument::getAsDecl() now asserts
instead of returning NULL for other template arugment kinds.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164896 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed