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--- a/mpd2src/fiforeader.h
+++ b/mpd2src/fiforeader.h
@@ -22,9 +22,7 @@
 
 #include <string>
 
-// This just somewhat encapsulates the code in the original
-// WavSender.cpp The file is still read and converted in memory at
-// once, and held in a memory array
+// Read audio from a FIFO, either in blocking or unblocking mode.
 class FifoReader : public AudioReader {
 public:
     FifoReader(const std::string& fn, int chans,
@@ -41,9 +39,9 @@
     std::string m_fn;
     bool m_needswap;
     bool m_blocking;
-    int m_fd;
-    unsigned char *m_tmpbuf;
-    size_t m_tmpbufsize;
+    int m_fd{-1};
+    unsigned char *m_tmpbuf{0};
+    size_t m_tmpbufsize{0};
 };
 
 #endif /* _FIFOREADER_H_INCLUDED_ */