Fix memory leak on LfpViewer

Source/Processors/LfpDisplayNode/LfpDisplayNode.cpp

@@ -33,7 +33,7 @@ LfpDisplayNode::LfpDisplayNode()
     //std::cout << " LFPDisplayNodeConstructor" << std::endl;
     displayBuffer = new AudioSampleBuffer(8, 100);
 
-    arrayOfOnes = new float[5000];
+	arrayOfOnes.malloc(5000);
 
     for (int n = 0; n < 5000; n++)
     {

Source/Processors/LfpDisplayNode/LfpDisplayNode.h

@@ -99,7 +99,7 @@ private:
 
     int64 bufferTimestamp;
     std::map<int, int> ttlState;
-    float* arrayOfOnes;
+    HeapBlock<float> arrayOfOnes;
     int totalSamples;
 
     bool resizeBuffer();