closure: Add missing JS_EndRequest in error path
closure: Add missing JS_EndRequest in error path

https://bugzilla.gnome.org/show_bug.cgi?id=630423

joeshaw/gjs,pixunil/cjs,djdeath/gjs,mtwebster/cjs,joeshaw/gjs,endlessm/gjs,djdeath/gjs,djdeath/gjs,endlessm/gjs,djdeath/gjs,pixunil/cjs,endlessm/gjs,joeshaw/gjs,joeshaw/gjs,magcius/gjs,pixunil/cjs,mtwebster/cjs,mtwebster/cjs,mtwebster/cjs,mtwebster/cjs,endlessm/gjs,magcius/gjs,endlessm/gjs,pixunil/cjs,magcius/gjs,djdeath/gjs,magcius/gjs,joeshaw/gjs,magcius/gjs,pixunil/cjs