Check change in CTB size when decoding multiple SPS with same id

If an SPS is being overwritten, ensure CTB size remains same.
If not, return from decoder and reset the decoder state in the
subsequent decode call.

Bug: 140322595
Test: poc in bug

Change-Id: I5f1e52d3bd2b48874a088ab32054f5a89e62eeb5
1 file changed