tests: Replace deprecated API log_set_print_filename

Change-Id: Idcc4875592c81f17ac98c4f6098492b3d9dd33d2
diff --git a/tests/fn/FnTest.cpp b/tests/fn/FnTest.cpp
index 4281fc3..e5ac46d 100644
--- a/tests/fn/FnTest.cpp
+++ b/tests/fn/FnTest.cpp
@@ -152,7 +152,7 @@
 	msgb_talloc_ctx_init(tall_pcu_ctx, 0);
 	osmo_init_logging2(tall_pcu_ctx, &gprs_log_info);
 	log_set_use_color(osmo_stderr_target, 0);
-	log_set_print_filename(osmo_stderr_target, 0);
+	log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE);
 	log_set_log_level(osmo_stderr_target, LOGL_DEBUG);
 
 	the_pcu = gprs_pcu_alloc(tall_pcu_ctx);