fix for WidgetWrap w/fixed widgets, incorrect error message
fix for WidgetWrap w/fixed widgets, incorrect error message

--HG--
extra : transplant_source : %96D%5C%E2%C3hp%E1f%86%D5%F1%F0%00%8B4%AA%921%8C

drestebon/urwid,zyga/urwid,mountainstorm/urwid,westurner/urwid,foreni-packages/urwid,urwid/urwid,wardi/urwid,douglas-larocca/urwid,inducer/urwid,wardi/urwid,harlowja/urwid,tonycpsu/urwid,tonycpsu/urwid,bk2204/urwid,douglas-larocca/urwid,inducer/urwid,drestebon/urwid,hkoof/urwid,harlowja/urwid,bk2204/urwid,wardi/urwid,urwid/urwid,westurner/urwid,rndusr/urwid,bk2204/urwid,zyga/urwid,hkoof/urwid,rndusr/urwid,zyga/urwid,inducer/urwid,Julian/urwid,foreni-packages/urwid,Julian/urwid,tonycpsu/urwid,urwid/urwid,mountainstorm/urwid,ivanov/urwid,mountainstorm/urwid,Julian/urwid,drestebon/urwid,foreni-packages/urwid,hkoof/urwid,westurner/urwid,ivanov/urwid,ivanov/urwid,harlowja/urwid,rndusr/urwid,douglas-larocca/urwid