Only disconnect from sender if sender() is valid

1 files changed, 3 insertions, 1 deletions

diff --git a/libopie2/opiecore/device/odevice.cpp b/libopie2/opiecore/device/odevice.cpp
index ec861ee..b5ae4e5 100644
--- a/libopie2/opiecore/device/odevice.cpp
+++ b/libopie2/opiecore/device/odevice.cpp
@@ -767,33 +767,35 @@ void ODevice::addPreHandler(QWSServer::KeyboardFilter*aFilter)
  *
  * @param aFilter The filter to be removed from the Opie::Core::OKeyFilter
  * @see Opie::Core::ODevice::addPreHandler
  */
 void ODevice::remPreHandler(QWSServer::KeyboardFilter*aFilter)
 {
     Opie::Core::OKeyFilter::inst()->remPreHandler(aFilter);
 }
 
 
 /**
  * @internal
  * 
  * @see changeMixerForAlarm
  */
 void ODevice::playingStopped() {
-    const_cast<QObject*>(sender())->disconnect( this );
+    if ( sender() )
+        const_cast<QObject*>(sender())->disconnect( this );
+
 #ifndef QT_NO_SOUND
     if ( d->m_sound >= 0 ) {
         ::ioctl ( d->m_sound, MIXER_WRITE( d->m_mixer ), &d->m_vol );
         ::close ( d->m_sound );
     }
 #endif
 }
 
 
 /**
  * \brief Change the Volume for the Alarm and set it back after playing is finished
  *
  * If you play an Alarm Sound you might want to change the Mixer to
  * full volume and ignore the user setting. After it \sa Sound::isFinished
  * you would turn the volume back to the user preference.
  * The problem is that we used to enter the event loop while waiting