fix favorite icon folder

iOSClient/Favorites/CCFavorites.m

@@ -574,7 +574,7 @@
         } else if ([shareUserAndGroup length] > 0) {
             cell.file.image = [CCGraphics changeThemingColorImage:[UIImage imageNamed:@"folder_shared_with_me"] color:[NCBrandColor sharedInstance].brand];
         } else {
-            cell.file.image = [CCGraphics changeThemingColorImage:[UIImage imageNamed:metadata.iconName] color:[NCBrandColor sharedInstance].brand];
+            cell.file.image = [CCGraphics changeThemingColorImage:[UIImage imageNamed:@"folder"] color:[NCBrandColor sharedInstance].brand];
         }
             
     } else {