output/alsa: copy the PcmExport result to the ring_buffer

.. and not the input data. Regression from commit b1c7649e (integer underflow). https://bugs.musicpd.org/view.php?id=4639

output/alsa: copy the PcmExport result to the ring_buffer
4a80e9cb · Max Kellermann · de80c270 · 4a80e9cb
Commit 4a80e9cb authored Feb 10, 2017 by Max Kellermann
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AlsaOutputPlugin.cxx src/output/plugins/AlsaOutputPlugin.cxx +2 -2

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--- a/src/output/plugins/AlsaOutputPlugin.cxx
+++ b/src/output/plugins/AlsaOutputPlugin.cxx
@@ -1201,8 +1201,8 @@ AlsaOutput::Play(const void *chunk, size_t size)
 		if (error)
 			std::rethrow_exception(error);

-		size_t bytes_written = ring_buffer->push((const uint8_t *)chunk,
-							 size);
+		size_t bytes_written = ring_buffer->push((const uint8_t *)e.data,
+							 e.size);
 		if (bytes_written > 0)
 			return pcm_export->CalcSourceSize(bytes_written);