ofz#3766 Integer-overflow

Change-Id: I0cd5810497e6baa23d10b905f35e30b694a4c12a
Reviewed-on: https://gerrit.libreoffice.org/43778
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

emfio/source/reader/mtftools.cxx

@@ -411,7 +411,7 @@ namespace emfio
                 fX2 -= mrclFrame.Left();
                 fY2 -= mrclFrame.Top();
             }
-            return Point( FRound( fX2 ), FRound( fY2 ) );
+            return Point(basegfx::fround(fX2), basegfx::fround(fY2));
         }
         else
             return Point();