[RFA] missing check against overlay_debugging in objfiles.c

[Joel Brobecker]

> > gdb/Changelog:
> >
> > Â  Â  Â  Â * objfiles.c (insert_section_p): Do not detect overlay sections
> > Â  Â  Â  Â if overlay debugging is off.
> 
> Ok with me.

Thanks! Now checked in.

-- 
Joel