COMPMID-1274: Fixed segfault in color conv reference

Change-Id: I662a46670096fc3d0fec2c28f320b9479a38edd5
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/135238
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
1 file changed