DragItem: don't care about BAM cycles for the dragged image

Fixes SCRL7E going invisible when dragging because the BAM doesn't
have any frames in cycle 0.

gemrb/core/Interface.cpp

@@ -4675,7 +4675,7 @@ void Interface::DragItem(CREItem *item, const ieResRef Picture)
 	if (video) {
 		Sprite2D* DraggedCursor = NULL;
 		if (item) {
-			DraggedCursor = gamedata->GetBAMSprite( Picture, 0, 0 );
+			DraggedCursor = gamedata->GetBAMSprite( Picture, -1, 0 );
 		}
 		video->SetCursor (DraggedCursor, VID_CUR_DRAG);
 		if (DraggedCursor) DraggedCursor->release();