Fix lazy_unregister test

tests/datawizard/lazy_unregister.c

@@ -25,7 +25,7 @@ static void dummy_func(void ** buffers, void * args) {
 static struct starpu_codelet dummy_cl =
 {
 	.modes = { STARPU_RW },
-	.cpu_funcs = {fummy_func, NULL},
+	.cpu_funcs = {dummy_func, NULL},
 	.nbuffers = 1
 };