From b42c6b3637782c9ad522bcb42e94650d39c51a51 Mon Sep 17 00:00:00 2001
From: Richard Russon <rich@flatcap.org>
Date: Mon, 29 Apr 2019 14:57:29 +0100
Subject: [PATCH] libmutt: fix history code for degenerate cases

---
 mutt/history.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mutt/history.c b/mutt/history.c
index f41609062..b41ca9807 100644
--- a/mutt/history.c
+++ b/mutt/history.c
@@ -410,6 +410,9 @@ static void remove_history_dups(enum HistoryClass hclass, const char *str)
  */
 int mutt_hist_search(const char *search_buf, enum HistoryClass hclass, char **matches)
 {
+  if (!search_buf || !matches)
+    return 0;
+
   struct History *h = get_history(hclass);
   if (!h)
     return 0;
-- 
2.49.0