Update PixieStreamMethod.h (#752)

src/internal/methods/PixieStreamMethod.h

@@ -42,8 +42,8 @@ public:
 
     PixieStreamMethod(uint16_t pixelCount, size_t elementSize, size_t settingsSize, Stream* pixieStream) :
         _sizeData(pixelCount * elementSize + settingsSize),
-        _usEndTime(0),
-        _stream(pixieStream)
+        _stream(pixieStream),
+        _usEndTime(0)
     {
         _data = static_cast<uint8_t*>(malloc(_sizeData));
         // data cleared later in Begin()