Fix Pitch Bend and Modulation

https://github.com/probonopd/MiniDexed/issues/9#issuecomment-1069626653
Thanks @rsta2

src/dexedadapter.h

@@ -63,6 +63,13 @@ public:
 		m_SpinLock.Release ();
 	}
 
+	void ControllersRefresh (void)
+	{
+		m_SpinLock.Acquire ();
+		Dexed::ControllersRefresh ();
+		m_SpinLock.Release ();
+	}
+
 private:
 	CSpinLock m_SpinLock;
 };

src/mididevice.cpp

@@ -134,6 +134,7 @@ void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsign
 		{
 		case MIDI_CC_MODULATION:
 			m_pSynthesizer->setModWheel (pMessage[2]);
+			m_pSynthesizer->ControllersRefresh ();
 			break;
 
 		case MIDI_CC_VOLUME:

src/minidexed.cpp

@@ -102,6 +102,9 @@ bool CMiniDexed::Initialize (void)
 	ProgramChange (0);
 	setTranspose (24);
 
+	setPBController (12, 1);
+	setMWController (99, 7, 0);
+
 	// setup and start the sound device
 	if (!m_pSoundDevice->AllocateQueueFrames (m_pConfig->GetChunkSize ()))
 	{