avformat/jpegxl_anim_dec: Check that size fits within argument

Fixes: out of array access
Fixes: 61991/clusterfuzz-testcase-minimized-ffmpeg_dem_JPEGXL_ANIM_fuzzer-5524679648215040
Fixes: 62181/clusterfuzz-testcase-minimized-ffmpeg_dem_JPEGXL_ANIM_fuzzer-5504964305485824
Fixes: 62214/clusterfuzz-testcase-minimized-ffmpeg_dem_JPEGXL_ANIM_fuzzer-4782972823535616

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

libavformat/jpegxl_anim_dec.c

@@ -152,6 +152,8 @@ static int jpegxl_anim_read_packet(AVFormatContext *s, AVPacket *pkt)
     size = avio_size(pb);
     if (size < 0)
         return size;
+    if (size > INT_MAX)
+        return AVERROR(EDOM);
     if (size == 0)
         size = 4096;