avcodec/atrac3plusdec: fix compilation failure after last commit

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/atrac3plusdec.c b/libavcodec/atrac3plusdec.c
index d1287ee8da..f2941299be 100644
--- a/libavcodec/atrac3plusdec.c
+++ b/libavcodec/atrac3plusdec.c
@@ -155,7 +155,7 @@ static av_cold int set_channel_params(ATRAC3PContext *ctx,
         return AVERROR_INVALIDDATA;
     }
 
-    ctx->channel_map = channel_map[channels - 1];
+    ctx->channel_map = channel_map[avctx->channels - 1];
 
     return 0;
 }