Catch errors in child constructors in DisplayObjectContainer#_constructChildren
Catch errors in child constructors in DisplayObjectContainer#_constructChildren

Just like for events dispatched by phases of the event loop, exceptions from inside/under hook functions shouldn't propagate up. r=trivial

tschneidereit/shumway,mozilla/shumway,yurydelendik/shumway,yurydelendik/shumway,yurydelendik/shumway,tschneidereit/shumway,yurydelendik/shumway,yurydelendik/shumway,tschneidereit/shumway,mozilla/shumway,yurydelendik/shumway,yurydelendik/shumway,mozilla/shumway,tschneidereit/shumway,mozilla/shumway,tschneidereit/shumway,tschneidereit/shumway,mozilla/shumway,mozilla/shumway,tschneidereit/shumway,yurydelendik/shumway,mozilla/shumway,tschneidereit/shumway,mozilla/shumway