RtlFreeUTF8String - NtDoc

#ifndef _NTRTL_H
#if (PHNT_VERSION >= PHNT_20H1)

NTSYSAPI
VOID
NTAPI
RtlFreeUTF8String(
    _Inout_ _At_(Utf8String->Buffer, _Frees_ptr_opt_) PUTF8_STRING Utf8String
    );

#endif
#endif
View code on GitHub

#ifndef _NTRTL_FWD_H
// begin_forwarders
#ifndef PHNT_INLINE_FREE_FORWARDERS

//#define RtlFreeUTF8String(Utf8String) {if ((Utf8String)->Buffer) RtlFreeHeap(RtlProcessHeap(), 0, (Utf8String)->Buffer); memset(Utf8String, 0, sizeof(UTF8_STRING));}
FORCEINLINE
VOID
NTAPI
RtlFreeUTF8String(
    _Inout_ _At_(Utf8String->Buffer, _Frees_ptr_opt_) PUTF8_STRING Utf8String
    )
{
    if (Utf8String->Buffer)
    {
        RtlFreeHeap(RtlProcessHeap(), 0, Utf8String->Buffer);
        memset(Utf8String, 0, sizeof(UTF8_STRING));
    }
}

#endif
// end_forwarders
#endif
View code on GitHub