simplify warning_collector by letting warnings sort themselves
simplify warning_collector by letting warnings sort themselves

chastell/reek,troessner/reek,apuratepp/reek,andyw8/reek,andyw8/reek,weby/reek,nTraum/reek,skywinder/reek,HParker/reek,troessner/reek,HParker/reek,skywinder/reek,skywinder/reek,apuratepp/reek,weby/reek,tansaku/reek,tansaku/reek,HParker/reek,apuratepp/reek,andyw8/reek,tansaku/reek,nTraum/reek,weby/reek