[458502] NPE in EMFCompareStructureMergeViewer.

Needed to make sure diagnostic passed to method updateProblemIndication
is never null.

Bug: 458502 (duplicate)
Bug: 457700
Change-Id: I023c74755332c7d6a93fa0bad1049ac64bdf915f
Signed-off-by: Laurent Delaigue <laurent.delaigue@obeo.fr>
1 file changed