fix clang report

1 files changed, 6 insertions, 0 deletions

diff --git a/src/transport/plugin_transport_wlan.c b/src/transport/plugin_transport_wlan.c
index 013020680..64e2dd092 100644
--- a/src/transport/plugin_transport_wlan.c
+++ b/src/transport/plugin_transport_wlan.c
@@ -588,6 +588,12 @@ send_ack (void *cls, uint32_t msg_id,
   size_t size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + msize;
   char buf[size];
 
+  if (NULL == endpoint)
+  {
+        GNUNET_break (0);
+        return;
+  }
+
   if (size >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
   {
     GNUNET_break (0);