From 08588a14f89cea03f34f6b3e491637cd912603be Mon Sep 17 00:00:00 2001
From: Pasi Kallinen <paxed@alt.org>
Date: Thu, 18 Apr 2024 17:12:21 +0300
Subject: [PATCH] Prevent error when vault guard fails to relocate monster

---
 src/vault.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/vault.c b/src/vault.c
index 667b657df..63591948a 100644
--- a/src/vault.c
+++ b/src/vault.c
@@ -657,7 +657,8 @@ wallify_vault(struct monst *grd)
                 if ((mon = m_at(x, y)) != 0 && mon != grd) {
                     if (mon->mtame)
                         yelp(mon);
-                    (void) rloc(mon, RLOC_ERR);
+                    if (!rloc(mon, RLOC_MSG))
+                        m_into_limbo(mon);
                 }
                 /* move gold at wall locations into the vault */
                 if ((gold = g_at(x, y)) != 0) {