From c4f4ea358dc9d511895ec39a22cea4f4ef46319c Mon Sep 17 00:00:00 2001
From: Douglas Clowes <dcl@ansto.gov.au>
Date: Wed, 17 Jan 2007 09:43:33 +1100
Subject: [PATCH] robustness

r1402 | dcl | 2007-01-17 09:43:33 +1100 (Wed, 17 Jan 2007) | 2 lines
---
 site_ansto/hardsup/nhq200util.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/site_ansto/hardsup/nhq200util.c b/site_ansto/hardsup/nhq200util.c
index dbc7e8a4..73b418d7 100644
--- a/site_ansto/hardsup/nhq200util.c
+++ b/site_ansto/hardsup/nhq200util.c
@@ -271,6 +271,9 @@ int NHQ200_Setup(pNHQ200 self, int iControl) /* Operations common to both Open a
   char pCommand[20];
   char pReply[132];
 
+  if (!self || !self->controller || !self->controller->pSock)
+    return NHQ200__BADCOM;
+
   /* MJL enable RS232 debugging mode. */
   setRS232Debug(self->controller,1);
   printf("***RS232 debug mode enabled for NHQ200***\n");fflush(stdout);