Fix segment coding mismatch for HDR (delta qp)
m_bEncodeDQP was not reset at the beginning of a new CTU. This could lead to wrong cost calculation in following CTUs. Especially it caused a mismatch in segment based coding.
m_bEncodeDQP was not reset at the beginning of a new CTU. This could lead to wrong cost calculation in following CTUs. Especially it caused a mismatch in segment based coding.