From 0c8d84aad1711dd8f15d878a4c0131b8a86de8ea Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Thu, 29 Aug 2013 22:12:00 +0100
Subject: [PATCH] Fix crash on re-position with FGCom.

Don't assume valueChanged firing means the value has actually
changed; various operations (eg, copyProperties) can also
cause the signals to fire.
---
 src/Network/fgcom.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Network/fgcom.cxx b/src/Network/fgcom.cxx
index 95f06333b..2068e0348 100644
--- a/src/Network/fgcom.cxx
+++ b/src/Network/fgcom.cxx
@@ -402,7 +402,12 @@ void FGCom::shutdown()
 void FGCom::valueChanged(SGPropertyNode *prop)
 {
   if (prop == _enabled_node) {
-    if( prop->getBoolValue() ) {
+      bool isEnabled = prop->getBoolValue();
+      if (_enabled == isEnabled) {
+          return;
+      }
+      
+    if( isEnabled ) {
       init();
       postinit();
     } else {