Moritz Barsnick 2250dc4044 avdevice/xcbgrab: check return values of xcb query functions ...

Fixes #7312, segmentation fault on close of X11 server

xcb_query_pointer_reply() and xcb_get_geometry_reply() can return NULL
if e.g. the X server closes or the connection is lost. This needs to
be checked in order to cleanly exit, because the returned pointers are
dereferenced later.

Signed-off-by: Moritz Barsnick <barsnick@gmx.net>
Reviewed-by: Andriy Gelman <andriy.gelman@gmail.com>

2020-08-15 15:32:52 -04:00

21 KiB

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