coverity#1435686 silence Copy-paste error

Change-Id: I017307e9b125dd0fe970736c6ebe482f08d54e90
Reviewed-on: https://gerrit.libreoffice.org/54586Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

svx/source/xoutdev/_xoutbmp.cxx

@@ -591,6 +591,7 @@ tools::Polygon XOutBitmap::GetContour( const Bitmap& rBmp, const XOutFlags nFlag
                             // this loop always breaks eventually as there is at least one pixel
                             while( true )
                             {
+                                // coverity[copy_paste_error] - this is correct nX, not nY
                                 if( aBlack == pAcc->GetPixelFromData( pScanline, nX ) )
                                 {
                                     pPoints2[ nPolyPos ] = Point( nX, nY );