fix build

tests/datawizard/interfaces/multiformat/multiformat_interface.c

@@ -138,7 +138,7 @@ int main(int argc, char **argv)
 	conf.ncuda = 2;
 	conf.nopencl = 1;
 
-	int ret = starpu_initialize(&conf, &argc, &argv);
+	ret = starpu_initialize(&conf, &argc, &argv);
 	if (ret == -ENODEV) return STARPU_TEST_SKIPPED;
 	STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");