Fix a horrifying bug which was causing all data from USB to be discarded.

lib/fluxmap.cc

@@ -4,7 +4,7 @@
 
 Fluxmap& Fluxmap::appendIntervals(std::vector<uint8_t>& intervals)
 {
-    return appendIntervals(&_intervals[0], _intervals.size());
+    return appendIntervals(&intervals[0], intervals.size());
 }
 
 Fluxmap& Fluxmap::appendIntervals(const uint8_t* ptr, size_t len)

lib/reader.cc

@@ -56,7 +56,6 @@ void Track::forceReread()
 
 void CapturedTrack::reallyRead()
 {
-
     usbSeek(track);
     _fluxmap = usbRead(side, revolutions);
 }