Removed warning

lib/ui/widgets/first_screen/contact_search_page.dart

@@ -253,9 +253,8 @@ class _ContactSearchPageState extends State<ContactSearchPage> {
       _searchTerm = extractPublicKey(pay.contact!.pubKey);
       await _search();
     } else {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(tr('qr_invalid_payment')))
-      );
+      ScaffoldMessenger.of(context)
+          .showSnackBar(SnackBar(content: Text(tr('qr_invalid_payment'))));
     }
     logger('QR result length ${_results.length}');
     if (_results.length == 1 && pay != null) {
@@ -271,9 +270,11 @@ class _ContactSearchPageState extends State<ContactSearchPage> {
         paymentCubit.setComment(pay.comment);
       }
     } else if (_results.isEmpty) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(tr('cant_find_qr_contact')))
-      );
+      if (!mounted) {
+        return;
+      }
+      ScaffoldMessenger.of(context)
+          .showSnackBar(SnackBar(content: Text(tr('cant_find_qr_contact'))));
     }
   }