decoder/flac: use C++11 initializers

src/decoder/plugins/FlacCommon.cxx

@@ -29,14 +29,6 @@
 #include "util/Error.hxx"
 #include "Log.hxx"
 
-FlacDecoder::FlacDecoder(Decoder &_decoder,
-			 InputStream &_input_stream)
-	:FlacInput(_input_stream, &_decoder),
-	 initialized(false), unsupported(false),
-	 position(0)
-{
-}
-
 static SampleFormat
 flac_sample_format(unsigned bits_per_sample)
 {

src/decoder/plugins/FlacCommon.hxx

@@ -41,12 +41,12 @@ struct FlacDecoder : public FlacInput {
 	/**
 	 * Has decoder_initialized() been called yet?
 	 */
-	bool initialized;
+	bool initialized = false;
 
 	/**
 	 * Does the FLAC file contain an unsupported audio format?
 	 */
-	bool unsupported;
+	bool unsupported = false;
 
 	/**
 	 * The validated audio format of the FLAC file.  This
@@ -58,11 +58,13 @@ struct FlacDecoder : public FlacInput {
 	 * End of last frame's position within the stream.  This is
 	 * used for bit rate calculations.
 	 */
-	FLAC__uint64 position;
+	FLAC__uint64 position = 0;
 
 	Tag tag;
 
-	FlacDecoder(Decoder &decoder, InputStream &input_stream);
+
+	FlacDecoder(Decoder &_decoder, InputStream &_input_stream)
+		:FlacInput(_input_stream, &_decoder) {}
 
 	/**
 	 * Wrapper for decoder_initialized().