From b8b95c7b2045668ac965e4bcbdbab501bf621678 Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Fri, 15 Jul 2016 03:58:52 -0700
Subject: [PATCH] TMXR: Avoid closing file descriptor 0 when disabling serial
 port console output

Properly initialize TMXR structure when attaching to a serial port so a
subsequent close will not attempt to close the uninitialized ring_sock.
---
 sim_tmxr.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sim_tmxr.c b/sim_tmxr.c
index 01e4d336..aa9b9b0a 100644
--- a/sim_tmxr.c
+++ b/sim_tmxr.c
@@ -2393,6 +2393,10 @@ for (i = 0; i < mp->lines; i++) {               /* initialize lines */
     if (lp->rxbpsfactor == 0.0)
         lp->rxbpsfactor = TMXR_RX_BPS_UNIT_SCALE;
     }
+mp->ring_sock = INVALID_SOCKET;
+free (mp->ring_ipad);
+mp->ring_ipad = NULL;
+mp->ring_start_time = 0;
 tmxr_debug_trace (mp, "tmxr_open_master()");
 while (*tptr) {
     line = nextline;