Whitelist operator== and operator!= as valid for unused value warnings,
even when overloaded and user-defined. These operators are both more
valuable to warn on (due to likely typos) and extremely unlikely to be
reasonable for use to trigger side-effects.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137823 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed