xfree86: Fix out of array bound access to xf86Entities

Signed-off-by: Łukasz Spintzyk <lukasz.spintzyk@synaptics.com>
5 jobs for fix_crash_in_1187 in 5 minutes and 16 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Docker Image
passed debian-buster #11236688

00:00:21

 
  Build And Test
passed autotools #11236689

00:04:55

passed meson #11236690

00:02:49

passed meson-noglamor #11236691

00:02:10

passed mingw-cross-build #11236692

00:00:53