adapt to new signature of MarkForRefinement

[[Imported from SVN: r7953]]

graphics/uggraph/wop.c

@@ -7341,7 +7341,7 @@ static INT EW_MarkElement2D (DRAWINGOBJ *q)
 		side = (side+1)%CORNERS_OF_ELEM(ME2D_elem);
 	else
 		side = 0;
-	MarkForRefinement(ME2D_elem,ME2D_rule,(void *)side);
+	MarkForRefinement(ME2D_elem,(enum RefinementRule)ME2D_rule,(void *)side);
 	
 	/* invert new mark */
 	q = InvertRefinementMark2D(ME2D_elem,q);