From 830eea5e957a083fae972ce77b44a0c623ec554e Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Tue, 29 Mar 2022 12:20:32 -0400
Subject: [PATCH] Fix crash when attempting to prune offscreen rows without
 content sections

---
 .../Utilities/DiffableTimelineLikeTableViewController.swift   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Tusker/Screens/Utilities/DiffableTimelineLikeTableViewController.swift b/Tusker/Screens/Utilities/DiffableTimelineLikeTableViewController.swift
index dd0a7ee2..8a17e5ff 100644
--- a/Tusker/Screens/Utilities/DiffableTimelineLikeTableViewController.swift
+++ b/Tusker/Screens/Utilities/DiffableTimelineLikeTableViewController.swift
@@ -77,7 +77,9 @@ class DiffableTimelineLikeTableViewController<Section: Hashable & CaseIterable,
         
         let contentSections = snapshot.sectionIdentifiers.filter { timelineContentSections().contains($0) }
         let contentSectionIndices = contentSections.compactMap(snapshot.indexOfSection(_:))
-        let maxContentSectionIndex = contentSectionIndices.max()!
+        guard let maxContentSectionIndex = contentSectionIndices.max() else {
+            return
+        }
         
         if lastVisibleRow.section < maxContentSectionIndex {
             return