Use a reference counted pointer for the condition.

Modified Files:
	simgear/sound/xmlsound.hxx simgear/sound/xmlsound.cxx

simgear/sound/xmlsound.cxx

@@ -63,7 +63,6 @@ static const struct {
 
 SGXmlSound::SGXmlSound()
   : _sample(NULL),
-    _condition(NULL),
     _active(false),
     _name(""),
     _mode(SGXmlSound::ONCE),
@@ -80,8 +79,6 @@ SGXmlSound::~SGXmlSound()
     if (_sample)
         _sample->stop();
 
-    delete _condition;
-
     _volume.clear();
     _pitch.clear();
 }

simgear/sound/xmlsound.hxx

@@ -138,7 +138,7 @@ private:
   SGSoundMgr * _mgr;
   SGSharedPtr<SGSoundSample> _sample;
 
-  SGCondition * _condition;
+  SGSharedPtr<SGCondition> _condition;
   SGPropertyNode_ptr _property;
 
   bool _active;