use the desiredsize and not the previous mrect size for the overflow area, bug 233438, r/sr=dbaron

layout/html/table/src/nsTableFrame.cpp

@@ -3017,7 +3017,7 @@ nsTableFrame::IR_TargetIsChild(nsIPresContext*      aPresContext,
                               desiredSize.height - oldKidRect.height);
 
     // recover the overflow area from all children
-    desiredSize.mOverflowArea = nsRect(0, 0, mRect.width, mRect.height);
+    desiredSize.mOverflowArea = nsRect(0, 0, desiredSize.width, desiredSize.height);
     for (nsIFrame* kidFrame = mFrames.FirstChild(); kidFrame; kidFrame = kidFrame->GetNextSibling()) {
       ConsiderChildOverflow(aPresContext, desiredSize.mOverflowArea, kidFrame);
     }  

layout/html/table/src/nsTableRowFrame.cpp

@@ -1336,7 +1336,7 @@ nsTableRowFrame::IR_TargetIsChild(nsIPresContext*          aPresContext,
   }
   
   // recover the overflow area
-  aDesiredSize.mOverflowArea = nsRect(0, 0, mRect.width, mRect.height);
+  aDesiredSize.mOverflowArea = nsRect(0, 0, aDesiredSize.width, aDesiredSize.height);
   for (nsIFrame* cell = mFrames.FirstChild(); cell; cell = cell->GetNextSibling()) {
     ConsiderChildOverflow(aPresContext, aDesiredSize.mOverflowArea, cell);
   }

layout/tables/nsTableFrame.cpp

@@ -3017,7 +3017,7 @@ nsTableFrame::IR_TargetIsChild(nsIPresContext*      aPresContext,
                               desiredSize.height - oldKidRect.height);
 
     // recover the overflow area from all children
-    desiredSize.mOverflowArea = nsRect(0, 0, mRect.width, mRect.height);
+    desiredSize.mOverflowArea = nsRect(0, 0, desiredSize.width, desiredSize.height);
     for (nsIFrame* kidFrame = mFrames.FirstChild(); kidFrame; kidFrame = kidFrame->GetNextSibling()) {
       ConsiderChildOverflow(aPresContext, desiredSize.mOverflowArea, kidFrame);
     }  

layout/tables/nsTableRowFrame.cpp

@@ -1336,7 +1336,7 @@ nsTableRowFrame::IR_TargetIsChild(nsIPresContext*          aPresContext,
   }
   
   // recover the overflow area
-  aDesiredSize.mOverflowArea = nsRect(0, 0, mRect.width, mRect.height);
+  aDesiredSize.mOverflowArea = nsRect(0, 0, aDesiredSize.width, aDesiredSize.height);
   for (nsIFrame* cell = mFrames.FirstChild(); cell; cell = cell->GetNextSibling()) {
     ConsiderChildOverflow(aPresContext, aDesiredSize.mOverflowArea, cell);
   }