HasFunctionProto is a more strict version of FunctionLike. Since attribute subjects are inclusive (passing a single subject test means no subject-related diagnostic will fire), these two subjects should not be combined.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199662 91177308-0d34-0410-b5e6-96231b3b80d8