Latest Linus head run of "make selftests" in the tools directory failed
with references to undefined variables.  Reference was to
'write_thread_data' which is the name of a struct that is being used, not
the variable itself.  Change reference so it points to the variable.
Signed-off-by: Daniel Hazelton <dshadowwolf@gmail.com>
Cc: "Paton J. Lewis" <palewis@adobe.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
        int index;
        struct write_thread_data *thread_data =
                (struct write_thread_data *)function_data;
-       while (!write_thread_data->stop)
+       while (!thread_data->stop)
                for (index = 0;
                     !thread_data->stop && (index < thread_data->n_fds);
                     ++index)
                        if ((write(thread_data->fds[index], &data, 1) < 1) &&
                                (errno != EAGAIN) &&
                                (errno != EWOULDBLOCK)) {
-                               write_thread_data->status = errno;
+                               thread_data->status = errno;
                                return;
                        }
 }