Regression introduced by b1c3dc6ae2.
Shutting down the libhal_ctx if the init failed may cause an abort.
This can happen if hald is not yet running at server startup.
X.Org Bug 23213 <http://bugs.freedesktop.org/show_bug.cgi?id=23213>
Tested-by: Stefan Dirsch
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>