Fixes: out of array read
Fixes: 2873/clusterfuzz-testcase-minimized-5924145713905664

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/aacdec_template.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/aacdec_template.c b/libavcodec/aacdec_template.c
index a539f74e6f..e7fa27e8db 100644
--- a/libavcodec/aacdec_template.c
+++ b/libavcodec/aacdec_template.c
@@ -1332,7 +1332,7 @@ static int decode_ics_info(AACContext *ac, 
IndividualChannelStream *ics,
                 ics->tns_max_bands =  ff_tns_max_bands_512[sampling_index];
             }
             if (!ics->num_swb || !ics->swb_offset)
-                return AVERROR_BUG;
+                goto fail;
         } else {
             ics->swb_offset    =    ff_swb_offset_1024[sampling_index];
             ics->num_swb       =   ff_aac_num_swb_1024[sampling_index];
@@ -1356,7 +1356,7 @@ static int decode_ics_info(AACContext *ac, 
IndividualChannelStream *ics,
                 if (aot == AOT_ER_AAC_LD) {
                     av_log(ac->avctx, AV_LOG_ERROR,
                            "LTP in ER AAC LD not yet implemented.\n");
-                    return AVERROR_PATCHWELCOME;
+                    goto fail;
                 }
                 if ((ics->ltp.present = get_bits(gb, 1)))
                     decode_ltp(&ics->ltp, gb, ics->max_sfb);
-- 
2.14.1

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