From a65abf2f4f1842765761a616e93c14ae25a284fd Mon Sep 17 00:00:00 2001
From: miaoerduo <zhaoyu3210@foxmail.com>
Date: Fri, 3 Apr 2020 14:07:22 +0800
Subject: [PATCH] fix: error list head's prev when detach the last item

---
 cJSON.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/cJSON.c b/cJSON.c
index 500fcf5..cc1c016 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -2210,6 +2210,12 @@ CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const it
         /* first element */
         parent->child = item->next;
     }
+    else if (item->next == NULL)
+    {
+        /* last element */
+        parent->child->prev = item->prev;
+    }
+
     /* make sure the detached item doesn't point anywhere anymore */
     item->prev = NULL;
     item->next = NULL;