mpegaudiodec: copy AVFloatDSPContext from first context to all contexts

This fixes a segfault when decoding multi-channel MP3onMP4 files.

This is similar to commit cb72230d for MPADSPContext.

Reviewed-by: Michael Niedermayer <[email protected]>
Signed-off-by: Andreas Cadhalpun <[email protected]>
(cherry picked from commit 151dbe4579601a81662b4b366d0e10df3c00027a)
Signed-off-by: Andreas Cadhalpun <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavcodec/mpegaudiodec_template.c b/libavcodec/mpegaudiodec_template.c
index f3a335c52a..2708c1a2ae 100644
--- a/libavcodec/mpegaudiodec_template.c
+++ b/libavcodec/mpegaudiodec_template.c
@@ -1880,6 +1880,7 @@ static av_cold int decode_init_mp3on4(AVCodecContext * avctx)
         s->mp3decctx[i]->adu_mode = 1;
         s->mp3decctx[i]->avctx = avctx;
         s->mp3decctx[i]->mpadsp = s->mp3decctx[0]->mpadsp;
+        s->mp3decctx[i]->fdsp = s->mp3decctx[0]->fdsp;
     }
 
     return 0;