Continue after rejecting commits from a commit query
Summary: Fixes T6880. If matching commits have no visible/loadable repository, we shouldn't keep going forward in the loop.
Test Plan: Havne't built a repro locally yet so not 100% sure this fixes it.
Reviewers: btrahan, mbishopim3, fabe
Reviewed By: mbishopim3, fabe
Subscribers: mbishopim3, epriestley
Maniphest Tasks: T6880
Differential Revision: https://secure.phabricator.com/D11251