[opaque pointer type] Update test cases now that the type for an invoke is...

[opaque pointer type] Update test cases now that the type for an invoke is just a function type, not a pointer-to-function type

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@235756 91177308-0d34-0410-b5e6-96231b3b80d8