minor refactor

Session/Closed Groups/NewClosedGroupVC.swift

@@ -170,7 +170,7 @@ final class NewClosedGroupVC: BaseVC, UITableViewDataSource, UITableViewDelegate
             with: searchResults[indexPath.row].id,
             profile: searchResults[indexPath.row],
             isZombie: false,
-            accessory: .o(isSelected: selectedContacts.contains(searchResults[indexPath.row].id))
+            accessory: .radio(isSelected: selectedContacts.contains(searchResults[indexPath.row].id))
         )
         
         return cell

Session/Shared/UserCell.swift

@@ -11,7 +11,7 @@ final class UserCell: UITableViewCell {
         case none
         case lock
         case tick(isSelected: Bool)
-        case o(isSelected: Bool)
+        case radio(isSelected: Bool)
         case x
     }
 
@@ -159,7 +159,7 @@ final class UserCell: UITableViewCell {
                 accessoryImageView.image = #imageLiteral(resourceName: "X").withRenderingMode(.alwaysTemplate)
                 accessoryImageView.contentMode = .center
                 accessoryImageView.tintColor = Colors.text
-            case .o(let isSelected):
+            case .radio(let isSelected):
                 accessoryImageView.isHidden = true
                 roundSelectionView.isHidden = false
                 roundSelectionView.update(isSelected: isSelected)