From 73f5d9237d2d2270f308f52e9727cdd02c3f9094 Mon Sep 17 00:00:00 2001
From: Matthew Chen <matthew@signal.org>
Date: Mon, 7 Jan 2019 09:56:53 -0500
Subject: [PATCH] Avoid overflow.

---
 .../ViewControllers/ConversationView/ConversationViewModel.m    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Signal/src/ViewControllers/ConversationView/ConversationViewModel.m b/Signal/src/ViewControllers/ConversationView/ConversationViewModel.m
index cb35f9dcf..c6f42228e 100644
--- a/Signal/src/ViewControllers/ConversationView/ConversationViewModel.m
+++ b/Signal/src/ViewControllers/ConversationView/ConversationViewModel.m
@@ -896,7 +896,7 @@ static const int kYapDatabaseRangeMaxLength = 25000;
                         // We skip animations for the last _two_
                         // interactions, not one since there
                         // may be a typing indicator.
-                        if (updateItem.newIndex < updateItems.count - 2) {
+                        if (updateItem.newIndex + 2 < updateItems.count) {
                             isOnlyModifyingLastMessage = NO;
                         }
                         break;