tree 388e6ad610f0bf847588aeed537e77a136318921
parent 46804ca5dddc852732268f09cb1ffc0f0575df17
author Derek Foreman <derekf@osg.samsung.com> 1428594682 -0500
committer Pekka Paalanen <pekka.paalanen@collabora.co.uk> 1428647405 +0300

xwm: Add and use helper function for looking up windows in the hash table

This lets us verify that all callers are actually testing for a
successful hash lookup at compile time.

All current users of hash_table_lookup are converted to the new
wm_lookup_window() and the appropriate success check is added.
This fixes any call sites that used to assume a successful return
and dereference a NULL pointer.

This closes http://bugs.freedesktop.org/show_bug.cgi?id=83994
The xwayland test has been failing because weston crashes due to
a hash lookup failure and a subsequent dereference of the returned
NULL pointer.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>