revert prior change - preserve separation of concerns

git-svn-id: https://svn.inf.ethz.ch/svn/lecturers/a2/trunk@7361 8c9fc860-2736-0410-a75d-ab315db34111

source/WMStandardComponents.Mod

@@ -2854,7 +2854,7 @@ TYPE
 	ImagePanel* = OBJECT(Panel)
 	VAR
 		imgName- : WMProperties.StringProperty;
-		img- : WMGraphics.Image;
+		img : WMGraphics.Image;
 		vScrollbar, hScrollbar : Scrollbar;
 		dx, dy : LONGINT;