//0x14 bytes (sizeof)
struct _LOCK_HEADER
{
    struct _RTL_AVL_TREE LockTree;                                          //0x0
    struct _RTL_AVL_TREE LockMdlSwitchedTree;                               //0x4
    ULONG Count;                                                            //0x8
    ULONG Lock;                                                             //0xc
    ULONG Valid;                                                            //0x10
};