From 1c8f312fb6bbe2f8096d9ebdaa63e006aa052b54 Mon Sep 17 00:00:00 2001
From: Bobby Durrett <nethack@bobbydurrettdba.com>
Date: Sun, 5 Jun 2016 21:10:26 -0700
Subject: [PATCH] Fix crash with MAIL env variable

---
 src/mail.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/mail.c b/src/mail.c
index 06ce1b266..82c7c0925 100644
--- a/src/mail.c
+++ b/src/mail.c
@@ -90,7 +90,12 @@ free_maildata()
 void
 getmailstatus()
 {
-    if (!mailbox && !(mailbox = nh_getenv("MAIL"))) {
+    char *emailbox;
+    if (emailbox = nh_getenv("MAIL")) {
+        mailbox = (char *) alloc((unsigned) strlen(emailbox));
+        Strcpy(mailbox, emailbox);
+    }
+    if (!mailbox) {
 #ifdef MAILPATH
 #ifdef AMS
         struct passwd ppasswd;
-- 
2.40.0