Prevent possible leak

Source/Processors/Visualization/SpikeDisplayCanvas.cpp

@@ -353,7 +353,7 @@ void SpikeDisplay::registerThresholdCoordinator(SpikeThresholdCoordinator *stc)
 
 SpikePlot::SpikePlot(SpikeDisplayCanvas* sdc, int elecNum, int p, String name_) :
     canvas(sdc), isSelected(false), electrodeNumber(elecNum),  plotType(p),
-	limitsChanged(true), name(name_), thresholdCoordinator(nullptr)
+	limitsChanged(true), name(name_)
 
 {
 
@@ -1277,6 +1277,11 @@ double GenericAxes::ad16ToUv(int x, int gain)
 
 SpikeThresholdCoordinator::SpikeThresholdCoordinator() : lockThresholds(false) {}
 
+SpikeThresholdCoordinator::~SpikeThresholdCoordinator()
+{
+	masterReference.clear();
+}
+
 void SpikeThresholdCoordinator::registerSpikePlot(SpikePlot *sp)
 {
 	registeredPlots.addIfNotAlreadyThere(sp);

Source/Processors/Visualization/SpikeDisplayCanvas.h

@@ -238,7 +238,7 @@ private:
 
     Font font;
 
-	SpikeThresholdCoordinator *thresholdCoordinator;
+	WeakReference<SpikeThresholdCoordinator> thresholdCoordinator;
 
 };
 
@@ -417,7 +417,7 @@ class SpikeThresholdCoordinator
 {
 public:
 	SpikeThresholdCoordinator();
-	~SpikeThresholdCoordinator() {};
+	~SpikeThresholdCoordinator();
 
 	void registerSpikePlot(SpikePlot *sp);
 	void unregisterSpikePlot(SpikePlot *sp);
@@ -429,6 +429,9 @@ public:
 private:
 	bool lockThresholds;
 	Array<SpikePlot*> registeredPlots;
+
+	WeakReference<SpikeThresholdCoordinator>::Master masterReference;
+	friend class WeakReference<SpikeThresholdCoordinator>;
 	
 };