[dconf] Revert "Disable another failing test"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit c0b6a365ffa0579d41bdbd37d523851e49b38029
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Mar 13 16:16:09 2018 -0500

    Revert "Disable another failing test"
    
    This reverts commit a9cc9f30b8cc340428cb781797dacd60b39f1de6.

 tests/dbus.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/tests/dbus.c b/tests/dbus.c
index 6d6846d..fba0741 100644
--- a/tests/dbus.c
+++ b/tests/dbus.c
@@ -466,8 +466,7 @@ main (int argc, char **argv)
   if (!g_str_equal (DBUS_BACKEND, "/libdbus-1"))
     g_test_add_func (DBUS_BACKEND "/creation/error", test_creation_error);
 
-  // FIXME: This test is failing.
-  //g_test_add_func (DBUS_BACKEND "/sync-call/success", test_sync_call_success);
+  g_test_add_func (DBUS_BACKEND "/sync-call/success", test_sync_call_success);
   g_test_add_func (DBUS_BACKEND "/sync-call/error", test_sync_call_error);
   g_test_add_func (DBUS_BACKEND "/async-call/success", test_async_call_success);
   g_test_add_func (DBUS_BACKEND "/async-call/error", test_async_call_error);