ntdll: Add stub for NtSetInformationThread(ThreadHideFromDebugger).

dlls/ntdll/thread.c

@@ -1227,6 +1227,10 @@ NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
             SERVER_END_REQ;
         }
         return status;
+    case ThreadHideFromDebugger:
+        /* pretend the call succeeded to satisfy some code protectors */
+        return STATUS_SUCCESS;
+
     case ThreadBasicInformation:
     case ThreadTimes:
     case ThreadPriority:

include/winternl.h

@@ -760,6 +760,7 @@ typedef enum _THREADINFOCLASS {
     ThreadPriorityBoost,
     ThreadSetTlsArrayAddress,
     ThreadIsIoPending,
+    ThreadHideFromDebugger,
     MaxThreadInfoClass
 } THREADINFOCLASS;