coverity#1222233 Division or modulo by zero

Change-Id: I699dc60b67d9417a8ac3848c03d7352f9f8ff12d

1 files changed, 10 insertions, 3 deletions

diff --git a/vcl/source/bitmap/bitmapscalesuper.cxx b/vcl/source/bitmap/bitmapscalesuper.cxx
index 4620c552286b..0b4be8cec6fc 100644
--- a/vcl/source/bitmap/bitmapscalesuper.cxx
+++ b/vcl/source/bitmap/bitmapscalesuper.cxx
@@ -861,9 +861,16 @@ void scaleNonPalleteGeneral2(BitmapReadAccess* pAcc, BitmapWriteAccess* pWAcc,
                 else if ( nLineRange == i )
                     nWeightY = pMapFY[ nBottom ];
 
-                nSumB += nWeightY * ( nSumRowB / nTotalWeightX );
-                nSumG += nWeightY * ( nSumRowG / nTotalWeightX );
-                nSumR += nWeightY * ( nSumRowR / nTotalWeightX );
+                if (nTotalWeightX)
+                {
+                    nSumRowB /= nTotalWeightX;
+                    nSumRowG /= nTotalWeightX;
+                    nSumRowR /= nTotalWeightX;
+                }
+
+                nSumB += nWeightY * nSumRowB;
+                nSumG += nWeightY * nSumRowG;
+                nSumR += nWeightY * nSumRowR;
                 nTotalWeightY += nWeightY;
             }