UI: remove account flow

When all account removed show create account screen

Change-Id: I9fcc83f00275b67cd66a2abe5be819b73f9aeb73
diff --git a/src/AppDelegate.mm b/src/AppDelegate.mm
index 6590e9f..fb015a5 100644
--- a/src/AppDelegate.mm
+++ b/src/AppDelegate.mm
@@ -338,6 +338,7 @@
         self.ringWindowController = [[RingWindowController alloc] initWithWindowNibName:@"RingWindow" bundle: nil accountModel:&lrc->getAccountModel() dataTransferModel:&lrc->getDataTransferModel() behaviourController:&lrc->getBehaviorController() avModel: &lrc->getAVModel()];
     }
     [[NSApplication sharedApplication] removeWindowsItem:self.wizard.window];
+    self.wizard = nil;
     [self.ringWindowController.window makeKeyAndOrderFront:self];
 }