Try harder about not suggesting methods as corrections when they
obviously won't work. Specifically, don't suggest methods (static or
not) from unrelated classes when the expression is a method call
through a specific object.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205653 91177308-0d34-0410-b5e6-96231b3b80d8