VOID
RtlFreeAnsiString(
IN PANSI_STRING AnsiString
);
RtlFreeAnsiString releases storage that was allocated by RtlUnicodeStringToAnsiString.
This routine does not release the Unicode string buffer passed to RtlUnicodeStringToAnsiString.
Callers of RtlFreeAnsiString must be running at IRQL PASSIVE_LEVEL.