LibAudio: WAV: Don't emit the very last sample in each decoded batch.

This is a total hack, because I haven't really looked into why these are
happening. Somehow we're producing one extra sample and it's glitching
up the sound stream ever so slightly.

Libraries/LibAudio/AWavLoader.cpp

@@ -257,5 +257,10 @@ RefPtr<ABuffer> ABuffer::from_pcm_data(ByteBuffer& data, int num_channels, int b
  // don't belong.
  ASSERT(!stream.handle_read_failure());
 
+ // HACK: This is a total hack to remove an unnecessary sample at the end of the buffer.
+ // FIXME: Don't generate the extra sample... :^)
+ for (int i = 0; i < 1; ++i)
+ fdata.take_last();
+
  return ABuffer::create_with_samples(move(fdata));
 }