From 4289c0aacdf56cfc57359271c2bfa2a8024104ce Mon Sep 17 00:00:00 2001
From: Torsten Dreyer <torsten@ŧ3r.de>
Date: Wed, 11 Mar 2015 22:24:07 +0100
Subject: [PATCH] MetarProperties: don't double-trigger listeners on invalidate

---
 src/Environment/metarproperties.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Environment/metarproperties.cxx b/src/Environment/metarproperties.cxx
index 97b94da0a..1ebdd33b0 100644
--- a/src/Environment/metarproperties.cxx
+++ b/src/Environment/metarproperties.cxx
@@ -192,7 +192,8 @@ MetarProperties::~MetarProperties()
 
 void MetarProperties::invalidate()
 {
-  _metarValidNode->setBoolValue(false);
+  if( _metarValidNode->getBoolValue() )
+    _metarValidNode->setBoolValue(false);
 }
 
 static const double thickness_value[] = { 0, 65, 600, 750, 1000 };
-- 
2.39.5