From 6c70ed4b4e5a804aa0670d0d5fa9dbf1f58bd2d1 Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Sun, 2 Jun 2024 09:41:22 -0700
Subject: [PATCH] Fix crash in MultiColumnNavController due to closing
 already-removed VC

Not sure how this is possible, but there was a report of it

Closes #485
---
 .../Screens/Utilities/MultiColumnNavigationController.swift   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Tusker/Screens/Utilities/MultiColumnNavigationController.swift b/Tusker/Screens/Utilities/MultiColumnNavigationController.swift
index e1537c8d..48bf7e08 100644
--- a/Tusker/Screens/Utilities/MultiColumnNavigationController.swift
+++ b/Tusker/Screens/Utilities/MultiColumnNavigationController.swift
@@ -142,8 +142,8 @@ class MultiColumnNavigationController: UIViewController {
     }
     
     fileprivate func closeColumn(_ vc: UIViewController) {
-        let index = viewControllers.firstIndex(of: vc)!
-        guard index > 0 else {
+        guard let index = viewControllers.firstIndex(of: vc),
+              index > 0 else {
             // Can't close the last column
             return
         }