Bug 1244628: compare nsStyleImageLayers::mAttachmentCount in nsStyleImageLayers::CalcDifference. r=dbaron.

--HG--
extra : commitid : JlCMq3C9wwB
extra : rebase_source : f9da96c973cc556b091623611157d25d94f5fd87

layout/style/nsStyleStruct.cpp

@@ -2321,7 +2321,8 @@ nsStyleImageLayers::CalcDifference(const nsStyleImageLayers& aOther) const
     return hint;
   }
 
-  if (mBlendModeCount != aOther.mBlendModeCount ||
+  if (mAttachmentCount != aOther.mAttachmentCount ||
+      mBlendModeCount != aOther.mBlendModeCount ||
       mClipCount != aOther.mClipCount ||
       mCompositeCount != aOther.mCompositeCount ||
       mMaskModeCount != aOther.mMaskModeCount ||