Fixed bug where reject, then expect would cause issues if using expectationOrderMatters.

Fixes https://github.com/erikdoe/ocmock/issues/155
Merge branch 'mglidden-fix-reject-export' of github.com:masong/ocmock into masong-mglidden-fix-reject-export
Merge branch 'masong-mglidden-fix-reject-export'
Small clean-ups.