ccsao non-ctc bug fix

Jie Chenrequested to merge
jiechen/ECM:CCSAO_NONCTC_FIX into master

The codes of CCSAO introduce several bugs in non-CTC condition as follows:

  1. If turn off SAO by configuration, there are encoder-decoder mismatch;
  2. If turn off Bilateral filter by configuration, decoder crashes;
  3. If both turn of SAO and Bilateral filter by configuration, encoder crashes. This commit is to solve these problems.

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