avcodec/utils: Check sample rate before use for AV_CODEC_ID_BINKAUDIO_DCT in get_audio_frame_duration()

Fixes: shift exponent 95 is too large for 32-bit type 'int'
Fixes: 26590/clusterfuzz-testcase-minimized-ffmpeg_dem_SMACKER_fuzzer-5120609937522688

Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/utils.c

@@ -1633,8 +1633,11 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
 
         if (ch > 0) {
             /* calc from sample rate and channels */
-            if (id == AV_CODEC_ID_BINKAUDIO_DCT)
+            if (id == AV_CODEC_ID_BINKAUDIO_DCT) {
+                if (sr / 22050 > 22)
+                    return 0;
                 return (480 << (sr / 22050)) / ch;
+            }
         }
 
         if (id == AV_CODEC_ID_MP3)