COMPMID-1481: CLCannyEdge still failing in some precommits

Without the check introduced by this patch, all weak edges as marked as strong
edges.

Change-Id: I874ebf22c06707bd98bd11b9be93602bfcbafa7c
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/142922
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
1 file changed