Handle allocation failures and admit we leak on error exit

Handle allocation failures and admit we leak on error exit

Now that I'm allocating more GLib things at start I do need to pay
attention to whether those did allocate and fail gracefully.  Since there's
no signal handler to do tidy cleanup and apparently no native GLib way to
kill GLib threads/loops from peer threads, I can't do proper cleanup on
exit...so just drop that code rather than pretend it actually works.

Signed-off-by: Tim Pepper <timothy.c.pepper@linux.intel.com>