Fix bug if attribute of a DOMNode object is itself an instance of DOMNode
Fix bug if attribute of a DOMNode object is itself an instance of DOMNode

olemis/brython,jonathanverner/brython,kevinmel2000/brython,Hasimir/brython,olemis/brython,rubyinhell/brython,Lh4cKg/brython,Hasimir/brython,Hasimir/brython,JohnDenker/brython,rubyinhell/brython,kikocorreoso/brython,kevinmel2000/brython,Isendir/brython,Mozhuowen/brython,Lh4cKg/brython,Isendir/brython,brython-dev/brython,Mozhuowen/brython,Isendir/brython,Mozhuowen/brython,Mozhuowen/brython,kevinmel2000/brython,brython-dev/brython,kevinmel2000/brython,brython-dev/brython,olemis/brython,amrdraz/brython,Lh4cKg/brython,JohnDenker/brython,rubyinhell/brython,kikocorreoso/brython,molebot/brython,molebot/brython,Hasimir/brython,Lh4cKg/brython,jonathanverner/brython,jonathanverner/brython,Isendir/brython,kikocorreoso/brython,amrdraz/brython,amrdraz/brython,JohnDenker/brython,amrdraz/brython,molebot/brython,JohnDenker/brython,rubyinhell/brython,olemis/brython,jonathanverner/brython,molebot/brython