When evaluating the stopping criterion, failed pairs from other streams
having the "use_candidate_on_next_check" flag set should be
ignored.

This should normally not happen, because a pair selected for nomination
has no reason to fail when being rechecked, since it previously
worked... but it may happen with Skype for Business, when libnice
selects a tcp pair for component 1, the peer seems to have no interest
in the second component and lets it fail in the middle of the conncheck.