qcacmn: Fix null pointer dereference in send_packetdump

netbuf in send_packetdump is never checked for null before
dereferencing it for len netbuf->len.

Change-Id: I51aa0fb9c52e04c33291791ef47def703754222d
CRs-Fixed: 2404844

utils/logging/src/wlan_logging_sock_svc.c

@@ -1346,6 +1346,11 @@ static void send_packetdump(qdf_nbuf_t netbuf, uint8_t status,
 	struct hdd_context *hdd_ctx;
 	struct hdd_adapter *adapter;
 
+	if (!netbuf) {
+		pr_err("%s: Invalid netbuf.\n", __func__);
+		return;
+	}
+
 	hdd_ctx = (struct hdd_context *)cds_get_context(QDF_MODULE_ID_HDD);
 	if (!hdd_ctx)
 		return;