Don't crash on exit

2010-11-07 10:31:13 +01:00
parent c305341ef4
commit 98d0f33f8f
1 changed files with 2 additions and 0 deletions
--- a/simgear/props/props.cxx
+++ b/simgear/props/props.cxx
@@ -2068,6 +2068,8 @@ SGPropertyNode::addChangeListener (SGPropertyChangeListener * listener,
 void
 SGPropertyNode::removeChangeListener (SGPropertyChangeListener * listener)
 {
+  if (_listeners == 0)
+    return;
  vector<SGPropertyChangeListener*>::iterator it =
    find(_listeners->begin(), _listeners->end(), listener);
  if (it != _listeners->end()) {