_cairo_malloc(0) always returns NULL, but has not been used
consistently. This patch replaces many calls to malloc() with
_cairo_malloc().
Fixes: fdo# 101547
CVE: CVE-2017-9814 Heap buffer overflow at cairo-truetype-subset.c:1299
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Both to make sure we do not leak the memory, but to also prevent
_cairo_xlib_surface_put_shm() from operating upon the finished shm
surface after the display is closed.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58253
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This is initially based around the requirements for handling internal
fallbacks to the image compositor and reducing the number of pixels
required to be transferred.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
