From 9c3df3e390e102363fdac6f0dac1fd5dfb6bbf7e Mon Sep 17 00:00:00 2001
From: illiliti <illiliti@protonmail.com>
Date: Thu, 9 Jul 2020 15:43:09 +0300
Subject: [PATCH] check NULL

---
 udev_list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/udev_list.c b/udev_list.c
index 4c00023..0696468 100644
--- a/udev_list.c
+++ b/udev_list.c
@@ -43,7 +43,7 @@ struct udev_list_entry *udev_list_entry_add(struct udev_list_entry *list_entry,
         }
 
         free(old->value);
-        old->value = strdup(value);
+        old->value = value ? strdup(value) : NULL;
         return old;
     }