AudioJack: more optional code for AudioPort support

There's been some more code that is only required if AUDIO_PORT_SUPPORT
is set. Added according #ifdefs and fixed a typo in AudioPort support
code.
(cherry picked from commit e98726ae992c77fb2dfdb6668319b5521ff8aaef)

include/AudioJack.h

@@ -109,6 +109,7 @@ private:
 	f_cnt_t m_framesToDoInCurBuf;
 
 
+#ifdef AUDIO_PORT_SUPPORT
 	struct StereoPort
 	{
 		jack_port_t * ports[2];
@@ -117,6 +118,7 @@ private:
 	typedef QMap<AudioPort *, StereoPort> JackPortMap;
 	JackPortMap m_portMap;
 #endif
+#endif
 
 signals:
 	void zombified();

src/core/audio/AudioJack.cpp

@@ -74,10 +74,12 @@ AudioJack::~AudioJack()
 {
 	m_stopSemaphore.release();
 
+#ifdef AUDIO_PORT_SUPPORT
 	while( m_portMap.size() )
 	{
 		unregisterPort( m_portMap.begin().key() );
 	}
+#endif
 
 	if( m_client != NULL )
 	{