gEDA-dev: Crash updating embeded component

[Ales Hvezda]

Hi Peter,


>I've discovered a potential crash in gschem... (It does some times).
>
>If you have a component, embed that component in the schematic (from
>edit menu), then go to Edit->Update component _twice_, the component
>gets replaced with a "can't find component warning, and valgrind notes
>some errors.

	I've reproduced this crash and valgrind output on my machine.

>
>Should we even be able up update an embedded component?


	Probably not and your patch in the subsequent e-mail is probably
the right thing to do, but I need to be fresh before I commit the fix. 
Thanks for the bug report and patch.

								-Ales