Merged revisions 203779 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r203779 | russell | 2009-06-26 15:45:00 -0500 (Fri, 26 Jun 2009) | 5 lines
  
  Ensure the TCP read buffer is fully initialized before handling each packet.
  
  (closes issue #14452)
  Reported by: umberto71
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@203782 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -2771,6 +2771,8 @@ static void *_sip_tcp_helper_thread(struct sip_pvt *pvt, struct ast_tcptls_sessi
 		reqcpy.data = str_save;
 		ast_str_reset(reqcpy.data);
 
+		memset(buf, 0, sizeof(buf));
+
 		if (tcptls_session->ssl) {
 			set_socket_transport(&req.socket, SIP_TRANSPORT_TLS);
 			req.socket.port = htons(ourport_tls);