From d857116e4143a500d6a1ea13f4baa057ba3b0028 Mon Sep 17 00:00:00 2001
From: ejurgensen <espenjurgensen@gmail.com>
Date: Fri, 14 Jan 2022 23:12:49 +0100
Subject: [PATCH] [daap] Fix null dereference on missing group-type param

---
 src/httpd_daap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/httpd_daap.c b/src/httpd_daap.c
index efea92d3..7a95c544 100644
--- a/src/httpd_daap.c
+++ b/src/httpd_daap.c
@@ -1650,7 +1650,7 @@ daap_reply_groups(struct httpd_request *hreq)
   int ret;
 
   param = evhttp_find_header(hreq->query, "group-type");
-  if (strcmp(param, "artists") == 0)
+  if (param && strcmp(param, "artists") == 0)
     {
       // Request from Remote may have the form:
       //  groups?meta=dmap.xxx,dma...&type=music&group-type=artists&sort=album&include-sort-headers=1&query=('...')&session-id=...