Fixed some cases of variables being used before initialization

Core/APU.cpp

@@ -14,6 +14,7 @@ APU::APU(shared_ptr<Console> console)
 {
 	_nesModel = NesModel::Auto;
 	_apuEnabled = true;
+	_needToRun = false;
 
 	_console = console;
 	_mixer = _console->GetSoundMixer();

Core/ApuFrameCounter.h

@@ -64,7 +64,7 @@ public:
 
 	void StreamState(bool saving) override
 	{
-		int32_t unusednextIrqCycle;
+		int32_t unusednextIrqCycle = 0;
 		Stream(unusednextIrqCycle, _previousCycle, _currentStep, _stepMode, _inhibitIRQ, _nesModel, _blockFrameCounterTick, _writeDelayCounter, _newValue);
 
 		if(!saving) {

Core/Debugger.cpp

@@ -76,6 +76,9 @@ Debugger::Debugger(shared_ptr<Console> console, shared_ptr<CPU> cpu, shared_ptr<
 	_breakOnScanline = -2;
 	_breakSource = BreakSource::Unspecified;
 
+	memset(_hasBreakpoint, 0, sizeof(_hasBreakpoint));
+	_bpDummyCpuRequired = false;
+
 	_preventResume = 0;
 	_stopFlag = false;
 	_suspendCount = 0;

Core/MMC5.h

@@ -353,6 +353,9 @@ protected:
 		_fillModeTile = 0;
 		_verticalSplitScroll = 0;
 		_verticalSplitBank = 0;
+		_verticalSplitEnabled = false;
+		_verticalSplitDelimiterTile = 0;
+		_verticalSplitRightSide = false;
 		_multiplierValue1 = 0;
 		_multiplierValue2 = 0;
 		_chrUpperBits = 0;
@@ -365,12 +368,15 @@ protected:
 		_exAttributeLastNametableFetch = 0;
 		_exAttrSelectedChrBank = 0;
 		
+		_irqPending = false;
 		_irqCounterTarget = 0;
 		_irqCounter = 0;
 		_irqEnabled = false;
 		_previousScanline = -1;
 		_ppuInFrame = false;
 
+		_lastVramOperationType = MemoryOperationType::Read;
+
 		_splitInSplitRegion = false;
 		_splitVerticalScroll = 0;
 		_splitTile = 0;

Core/MMC5Audio.h

@@ -21,6 +21,7 @@ public:
 	{
 		_currentOutput = 0;
 		_isMmc5Square = true;
+		Reset(false);
 	}
 
 	int8_t GetOutput()

Core/SoundMixer.cpp

@@ -12,6 +12,7 @@
 SoundMixer::SoundMixer(shared_ptr<Console> console)
 {
 	_audioDevice = nullptr;
+	_clockRate = 0;
 	_console = console;
 	_settings = _console->GetSettings();
 	_eqFrequencyGrid.reset(new orfanidis_eq::freq_grid());