www/waterfox/files/patch-bug1352453


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commit 96ac0874dc2e
Author: Ethan Lin <ethlin@mozilla.com>
Date:   Sat Sep 23 15:06:07 2017 +0800

    Bug 1352453 - Check image dimension when computing border space size. r=heycam, a=sledru
    
    MozReview-Commit-ID: LQcf9UGyUUq
    
    --HG--
    extra : source : 6974ff079df11b3e7dc46e2df754149321e3f3aa
---
 layout/painting/nsCSSRendering.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git layout/painting/nsCSSRendering.cpp layout/painting/nsCSSRendering.cpp
index 89760f33229b..55051c9ac376 100644
--- layout/painting/nsCSSRendering.cpp
+++ layout/painting/nsCSSRendering.cpp
@@ -3068,7 +3068,7 @@ nsCSSRendering::ComputeBorderSpacedRepeatSize(nscoord aImageDimension,
                                               nscoord aAvailableSpace,
                                               nscoord& aSpace)
 {
-  int32_t count = aAvailableSpace / aImageDimension;
+  int32_t count = aImageDimension ? (aAvailableSpace / aImageDimension) : 0;
   aSpace = (aAvailableSpace - aImageDimension * count) / (count + 1);
   return aSpace + aImageDimension;
 }