Don't stringify objects in AVM1 warnings
Don't stringify objects in AVM1 warnings

Makes debugging quite a bit easier than "[object Object]" logs.

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