[core] Fixed CRcvLossList can not remove m_iMaxSeqNo.
[core] Fixed CRcvLossList can not remove m_iMaxSeqNo.

ethouris/srt,Haivision/srt,ethouris/srt,Haivision/srt,Haivision/srt,ethouris/srt,ethouris/srt,Haivision/srt