ntdll: Don't allow setting a zero thread affinity.

dlls/ntdll/tests/info.c

@@ -920,7 +920,6 @@ static void test_affinity(void)
         "Expected STATUS_INVALID_PARAMETER, got %08x\n", status);
     thread_affinity = 0;
     status = pNtSetInformationThread( GetCurrentThread(), ThreadAffinityMask, &thread_affinity, sizeof(thread_affinity) );
-    todo_wine
     ok( status == STATUS_INVALID_PARAMETER,
         "Expected STATUS_INVALID_PARAMETER, got %08x\n", status);
 

dlls/ntdll/thread.c

@@ -1216,6 +1216,7 @@ NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
             const ULONG_PTR *paff = data;
             if (length != sizeof(ULONG_PTR)) return STATUS_INVALID_PARAMETER;
             if (*paff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
+            if (!*paff) return STATUS_INVALID_PARAMETER;
             SERVER_START_REQ( set_thread_info )
             {
                 req->handle   = wine_server_obj_handle( handle );