comp-wayland: use safe foreach when destroying outputs

wl_list_for_each dereference's output to increment the
next iteration of the loop.  However, output is free'd
inside the loop resulting in a dereference to free'd
memory.

Use wl_list_for_each_safe instead, which is designed to
handle this kind of pattern.

Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
1 file changed