From 8f339de43b0f3a079274b7ccfef5f76ae8a1717c Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Fri, 1 Mar 1991 14:55:46 +0000
Subject: [PATCH] Prevent possible null-dereference

---
 util/ego/bo/bo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/ego/bo/bo.c b/util/ego/bo/bo.c
index 64892c7e9..1951ac6d1 100644
--- a/util/ego/bo/bo.c
+++ b/util/ego/bo/bo.c
@@ -71,7 +71,7 @@ STATIC line_p last_code(lines,skip_pseu)
 
 	for (l = lines; l->l_next != (line_p) 0; l = l->l_next);
 	if (skip_pseu) {
-		while (INSTR(l) < sp_fmnem || INSTR(l) > sp_lmnem) l = PREV(l);
+		while (l && (INSTR(l) < sp_fmnem || INSTR(l) > sp_lmnem)) l = PREV(l);
 	}
 	return l;
 }
-- 
2.34.1