Trace version of LogOpenFile parameter packet.

typedef struct _LOFREQUESTTRACE {
  ULONG         packet_size;
  ULONG         packet_revision_number;
  PULONG        filename_length;
  UniChar      *filename;
  HFILE         FileHandle;
} LOFREQUESTTRACE;

typedef   LOFREQUESTTRACE   * PLOFREQUESTTRACE ;