avformat/aiffdec: Check for size overflow in header parsing

Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6723467048255488

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/aiffdec.c

@@ -100,6 +100,9 @@ static int get_aiff_header(AVFormatContext *s, int size,
     int sample_rate;
     unsigned int num_frames;
 
+    if (size == INT_MAX)
+        return AVERROR_INVALIDDATA;
+
     if (size & 1)
         size++;
     par->codec_type = AVMEDIA_TYPE_AUDIO;