Fixes: out of array access
Fixes: 
70734/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-4741427068731392

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/aac/aacdec_usac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavcodec/aac/aacdec_usac.c b/libavcodec/aac/aacdec_usac.c
index 82db65eb0d0..2938e693874 100644
--- a/libavcodec/aac/aacdec_usac.c
+++ b/libavcodec/aac/aacdec_usac.c
@@ -918,8 +918,10 @@ static int decode_usac_stereo_info(AACDecContext *ac, 
AACUSACConfig *usac,
         }
 
         ret = setup_sce(ac, sce1, usac);
-        if (ret < 0)
+        if (ret < 0) {
+            ics2->max_sfb = 0;
             return ret;
+        }
 
         ret = setup_sce(ac, sce2, usac);
         if (ret < 0)
-- 
2.45.2

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