FSE_flushCState
static void FSE_flushCState(BIT_CStream_t* bitC, const FSE_CState_t* CStatePtr);
FSE_flushCState(&bitC, &CState2);
FSE_flushCState(&bitC, &CState1);
FSE_flushCState(&blockStream, &stateMatchLength);
FSE_flushCState(&blockStream, &stateOffsetBits);
FSE_flushCState(&blockStream, &stateLitLength);