Add more size checking for 'stts' box

Note: new limit, data_size - 8, should be smaller than the previous one,
UINT_MAX, since we global atom size checking with kMaxAtomSize, 2^26.

Test: run poc
Bug: 127973550
Change-Id: I1744d71d2e10183dd2bebfd01b15d9ee5998fdf3
1 file changed