From 0f7bd6a3cd515be7bc611848f26a7c2b22f8be9f Mon Sep 17 00:00:00 2001
From: "Justin M. Keyes" <justinkz@gmail.com>
Date: Sat, 11 Jul 2026 07:15:04 -0400
Subject: [PATCH] fix(diff): resource leak on :diffput E787 error path #40686

Coverity CID 649080/649081
---
 src/nvim/diff.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/nvim/diff.c b/src/nvim/diff.c
index c5fca1225c..6dd2ca5cb4 100644
--- a/src/nvim/diff.c
+++ b/src/nvim/diff.c
@@ -3815,6 +3815,7 @@ void ex_diffgetput(exarg_T *eap)
     change_warning(curbuf, 0);
     if (diff_buf_idx(curbuf, curtab) != idx_to) {
       emsg(_("E787: Buffer changed unexpectedly"));
+      aucmd_restbuf(&aco);
       goto theend;
     }
   }