A little crash fix.

--HG--
branch : dfighter-tools

code/nel/include/nel/gui/interface_element.h

@@ -508,7 +508,7 @@ namespace NLGUI
 
 		/// Called when the widget is deleted,
 		/// so other widgets in the group can check if it belongs to them
-		virtual void onWidgetDeleted( CInterfaceElement *e ){}
+		virtual void onWidgetDeleted( CInterfaceElement *e );
 
 		/// Move the element by x in the X direction and y in the Y direction
 		//  Uses real coordinates

code/nel/src/gui/interface_element.cpp

@@ -1685,6 +1685,14 @@ namespace NLGUI
 		invalidateCoords();
 	}
 
+	void CInterfaceElement::onWidgetDeleted( CInterfaceElement *e )
+	{
+		if( e == getParentPos() )
+			setParentPos( NULL );
+		if( e == getParentSize() )
+			setParentSize( NULL );
+	}
+
 	CStringMapper* CStringShared::_UIStringMapper = NULL;