phase3: nullfix arg-bang handler (argument_type/invalid_assignment). 872 -> 621

lib/widgets/mobile/mobile_new_comment.dart

@@ -217,7 +217,7 @@ class MobileNewCommentState extends State<MobileNewComment> {
                             child: Text(S.of(context).yes_i_am_sure),
                             onPressed: () {
                               Navigator.of(context).pop();
-                              _deleteImage(image.id);
+                              _deleteImage(image.id!);
                             },
                           ),
                         ],
@@ -269,7 +269,7 @@ class MobileNewCommentState extends State<MobileNewComment> {
                 context: mainContext,
                 barrierDismissible: true,
                 builder: (BuildContext context) {
-                  return Util().getPicture(mainContext, store.state.user,
+                  return Util().getPicture(mainContext, store.state.user!,
                       commentId: comment != null ? comment.id : 0,
                       orderId: widget.orderId);
                 }