From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 20 Nov 2017 21:59:19 +0000 (+0100)
Subject: Curl_llist_remove: fix potential NULL pointer deref
X-Git-Tag: curl-7_57_0~26
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=cec0734b4c3a396d22e0c9e30f613d8255f431bf;p=curl

Curl_llist_remove: fix potential NULL pointer deref

Fixes a scan-build warning.
---

diff --git a/lib/llist.c b/lib/llist.c
index 4bb0a51b8..f8769c2af 100644
--- a/lib/llist.c
+++ b/lib/llist.c
@@ -106,7 +106,11 @@ Curl_llist_remove(struct curl_llist *list, struct curl_llist_element *e,
       e->next->prev = NULL;
   }
   else {
-    e->prev->next = e->next;
+    if(!e->prev)
+      list->head = e->next;
+    else
+      e->prev->next = e->next;
+
     if(!e->next)
       list->tail = e->prev;
     else