the arguments to this function can be null-pointers, bug 124986 r=karnaze sr=attinasi

webshell/tests/viewer/nsWebBrowserChrome.cpp

@@ -304,12 +304,16 @@ NS_IMETHODIMP nsWebBrowserChrome::GetDimensions(PRUint32 aFlags, PRInt32 *aX, PR
   mBrowserWindow->GetPositionAndSize(&x, &y, &cx, &cy);
   if (aFlags & DIM_FLAGS_POSITION)
   {
+    if(aX)
       *aX = x;
+    if(aY)
       *aY = y;
   }
   if (aFlags & DIM_FLAGS_SIZE_INNER || aFlags & DIM_FLAGS_SIZE_OUTER)
   {
+    if(aCX)
       *aCX = cx;
+    if(aCY)
       *aCY = cy;
   }
   return NS_OK;