Refuse to accept NaNs in MovingMedian, replacing them with zeros (and a warning) instead. (Must push something, to maintain filter length)

src/dsp/MovingMedian.h

@@ -30,6 +30,8 @@
 
 #include <algorithm>
 
+#include <iostream>
+
 namespace RubberBand
 {
 
@@ -59,6 +61,10 @@ public:
     }
 
     void push(T value) {
+        if (value != value) {
+            std::cerr << "WARNING: MovingMedian: NaN encountered" << std::endl;
+            value = T();
+        }
 	drop(m_frame[0]);
 	v_move(m_frame, m_frame+1, P::m_size-1);
 	m_frame[P::m_size-1] = value;