[GISel]: Fix base case for m_any_of PatternMatcher.

The base case for any_of was incorrectly returning true. Also add test
case which uses m_any_of(preds...) where none of the predicates are
true.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@325848 91177308-0d34-0410-b5e6-96231b3b80d8