ntdll: Don't return success from the NtQueryEvent stub.

[Hans Leidekker]

diff --git a/dlls/ntdll/sync.c b/dlls/ntdll/sync.c
index 6051f62..f3f969a 100644
--- a/dlls/ntdll/sync.c
+++ b/dlls/ntdll/sync.c
@@ -402,7 +402,7 @@ NTSTATUS WINAPI NtQueryEvent (
 	OUT PULONG  ReturnLength)
 {
 	FIXME("(%p)\n", EventHandle);
-	return STATUS_SUCCESS;
+	return STATUS_NOT_IMPLEMENTED;
 }
 
 /*