prefer_const_constructors

Author: vHanda

lib/screens/folder_listing.dart

@@ -101,7 +101,7 @@ class _FolderListingScreenState extends State<FolderListingScreen> {
     }
 
     var backButton = IconButton(
-      icon: Icon(Icons.arrow_back),
+      icon: const Icon(Icons.arrow_back),
       onPressed: () {
         _folderTreeViewKey.currentState.resetSelection();
       },

lib/screens/githostsetup_screens.dart

@@ -245,7 +245,7 @@ class GitHostSetupScreenState extends State<GitHostSetupScreen> {
           if (Platform.isIOS)
             InkWell(
               child: Container(
-                child: Icon(Icons.arrow_back, size: 32.0),
+                child: const Icon(Icons.arrow_back, size: 32.0),
                 padding: const EdgeInsets.all(8.0),
               ),
               onTap: () => Navigator.of(context).pop(),

lib/screens/journal_listing.dart

@@ -125,7 +125,7 @@ class NoteSearch extends SearchDelegate<Note> {
   @override
   Widget buildLeading(BuildContext context) {
     return IconButton(
-      icon: Icon(Icons.arrow_back),
+      icon: const Icon(Icons.arrow_back),
       onPressed: () {
         close(context, null);
       },

lib/screens/settings_screen.dart

@@ -13,7 +13,7 @@ class SettingsScreen extends StatelessWidget {
       appBar: AppBar(
         title: const Text('Settings'),
         leading: IconButton(
-          icon: Icon(Icons.arrow_back),
+          icon: const Icon(Icons.arrow_back),
           onPressed: () {
             Navigator.of(context).pop();
           },