[iOS] Fix legacy toggle

iOS/AddSiteController.m

@@ -88,7 +88,7 @@ showAlert(UIViewController *controller, NSString *title, NSString *message)
 	[self.mainViewController.siteStorage
 	    setSite: name
 	     length: length
-	     legacy: self.legacySwitch.enabled];
+	     legacy: self.legacySwitch.on];
 
 	[self.mainViewController.tableView reloadData];
 

iOS/ShowDetailsController.m

@@ -75,7 +75,7 @@ clearNSMutableString(NSMutableString *string)
 
 	self.nameField.text = [_name NSObject];
 	self.lengthField.text = [NSString stringWithFormat: @"%zu", _length];
-	self.legacySwitch.enabled = _legacy;
+	self.legacySwitch.on = _legacy;
 }
 
 - (void)viewDidAppear: (BOOL)animated