mangozero：

void Unit::StopMoving(bool forceSendStop /*=false*/)
{
    clearUnitState(UNIT_STAT_MOVING);       

   if (IsStopped() && !forceSendStop)      

        return;

    // not need send any packets if not in world
    if (!IsInWorld())
        return;


Cmangos：

void Unit::StopMoving(bool forceSendStop /*=false*/)
{
    if (IsStopped() && !forceSendStop)    

        return;

    clearUnitState(UNIT_STAT_MOVING); 

    // not need send any packets if not in world 
    if (!IsInWorld())
        return;