#ifndef _NTRTL_H

NTSYSAPI
NTSTATUS
NTAPI
RtlDestroyEnvironment(
    _In_ _Post_invalid_ PVOID Environment
    );

#endif
View code on GitHub

#ifndef _NTRTL_FWD_H
// begin_forwarders
#ifndef PHNT_INLINE_FREE_FORWARDERS

//#define RtlDeleteSecurityObject(ObjectDescriptor) RtlFreeHeap(RtlProcessHeap(), 0, *(ObjectDescriptor))
//FORCEINLINE
//NTSTATUS
//RtlDeleteSecurityObject(
//    _Inout_ PSECURITY_DESCRIPTOR *ObjectDescriptor
//    )
//{
//    RtlFreeHeap(RtlProcessHeap(), 0, *ObjectDescriptor);
//    return STATUS_SUCCESS;
//}

//#define RtlDestroyEnvironment(Environment) RtlFreeHeap(RtlProcessHeap(), 0, (Environment))
FORCEINLINE
NTSTATUS
NTAPI
RtlDestroyEnvironment(
    _In_ _Post_invalid_ PVOID Environment
    )
{
    RtlFreeHeap(RtlProcessHeap(), 0, Environment);
    return STATUS_SUCCESS;
}

#endif
// end_forwarders
#endif
View code on GitHub