this fixes a crash when switching audio channels if the spectrograph is
displayed.
---
 avplay.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/avplay.c b/avplay.c
index c67cc75..01c0f11 100644
--- a/avplay.c
+++ b/avplay.c
@@ -2279,6 +2279,8 @@ static void stream_component_close(VideoState *is, int 
stream_index)
         if (is->rdft) {
             av_rdft_end(is->rdft);
             av_freep(&is->rdft_data);
+            is->rdft = NULL;
+            is->rdft_bits = 0;
         }
         break;
     case AVMEDIA_TYPE_VIDEO:
-- 
1.7.1

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