player: wake up decoder before waiting for xfade chunks

Fix a deadlock: when the decoder waited for buffer space, the player
could enter a deadlock situation because it waits for more chunks for
crossfading chunks.  Signal the decoder before entering notify_wait().

1 files changed, 1 insertions, 0 deletions

diff --git a/src/player_thread.c b/src/player_thread.c
index 9f2ff4389..7570443da 100644
--- a/src/player_thread.c
+++ b/src/player_thread.c
@@ -429,6 +429,7 @@ static void do_play(void)
 						/* wait for the
 						   decoder */
 						music_pipe_set_lazy(false);
+						notify_signal(&dc.notify);
 						notify_wait(&pc.notify);
 						continue;
 					}