Re: bonobo_widget_new_subdoc error checking

[Miguel de Icaza <miguel helixcode com>]

> bonobo_widget_new_subdoc doesn't check if it succesfully launched the
> component or not, which causes lots of g_warnings before something
> finally manages to clean up after it when it doesn't. This fixes it.

Ok, so I got a new version of this piece of code without the leaks and
with the proper error propagation now.  Will commit in a minute.

Miguel.