From 498b5056229d29f94d392d105a8f00e59978b6a6 Mon Sep 17 00:00:00 2001
From: Roman Arutyunyan <arut@qip.ru>
Date: Wed, 4 Apr 2012 02:27:06 +0400
Subject: [PATCH] fxed crash on NULL arg in netcall

---
 ngx_rtmp_netcall_module.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/ngx_rtmp_netcall_module.c b/ngx_rtmp_netcall_module.c
index 061562c..119e748 100644
--- a/ngx_rtmp_netcall_module.c
+++ b/ngx_rtmp_netcall_module.c
@@ -193,11 +193,13 @@ ngx_rtmp_netcall_create(ngx_rtmp_session_t *s, ngx_rtmp_netcall_init_t *ci)
     }
 
     /* copy arg to connection pool */
-    cs->arg = ngx_pcalloc(pool, ci->argsize);
-    if (cs->arg == NULL) {
-        goto error;
+    if (ci->argsize) {
+        cs->arg = ngx_pcalloc(pool, ci->argsize);
+        if (cs->arg == NULL) {
+            goto error;
+        }
+        ngx_memcpy(cs->arg, ci->arg, ci->argsize);
     }
-    ngx_memcpy(cs->arg, ci->arg, ci->argsize);
 
     cs->url = ci->url;
     cs->session = s;