Fix a possible NULL reference that would be triggered

by invalid input in /etc/crontab. MFC after: 2 days
svn path=/head/; revision=80030
2001-07-20 06:46:48 +00:00 · 2001-07-20 06:46:48 +00:00 · 4a9e66b57b · 2020-12-20 02:59:44 +00:00
commit 4a9e66b57b
parent 90e655ea4e
1 changed files with 2 additions and 1 deletions
--- a/usr.sbin/cron/lib/env.c
+++ b/usr.sbin/cron/lib/env.c
@ -41,7 +41,8 @@ env_free(envp)
 {
 	char	**p;

-	for (p = envp;  *p;  p++)
+	if ((p = envp))
+	    for (;  *p;  p++)
 		free(*p);
 	free(envp);
 }