libnm: Fix type mismatch in test

Causes the info->remaining to be counted incorrectly possibly resulting in
g_main_loop_quit() being called twice:

  Program received signal SIGSEGV, Segmentation fault.
  0x00007ffff5a03155 in g_mutex_lock (mutex=0x7ffff7b764b4) at gthread-posix.c:1331
  1331	  if G_UNLIKELY (g_atomic_int_add (&mutex->i[0], 1) != 0)
  Missing separate debuginfos, use: debuginfo-install libgcc-4.9.2-1.fc21.x86_64 libgudev1-216-8.fc21.x86_64 libselinux-2.3-5.fc21.x86_64 libuuid-2.25.2-1.fc21.x86_64 ncurses-libs-5.9-16.20140323.fc21.x86_64 nspr-4.10.7-1.fc21.x86_64 nss-3.17.2-1.fc21.x86_64 nss-softokn-3.17.2-1.fc21.x86_64 nss-softokn-freebl-3.17.2-1.fc21.x86_64 nss-util-3.17.2-1.fc21.x86_64 sqlite-3.8.7-1.fc21.x86_64 systemd-libs-216-8.fc21.x86_64
  (gdb) bt
  #0  0x00007ffff5a03155 in g_mutex_lock (mutex=0x7ffff7b764b4) at gthread-posix.c:1331
  #1  0x00007ffff59bf258 in g_main_loop_quit (loop=0x7fffffffd130) at gmain.c:4000
  #5  0x00007ffff5edc3bf in <emit signal notify:active-connection on instance 0x5555557bd180 [NMDeviceVlan]> (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at gsignal.c:3365
      #2  0x00007ffff5ec1d35 in g_closure_invoke (closure=0x5555557b3da0, return_value=return_value@entry=0x0, n_param_values=2, param_values=param_values@entry=0x7fffffffd760, invocation_hint=invocation_hint@entry=0x7fffffffd700) at gclosure.c:768
      #3  0x00007ffff5ed3a52 in signal_emit_unlocked_R (node=node@entry=0x555555787040, detail=detail@entry=341, instance=instance@entry=0x5555557bd180, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffd760) at gsignal.c:3553
      #4  0x00007ffff5edc191 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffffffd8f0) at gsignal.c:3309
  #6  0x00007ffff5ec6465 in g_object_dispatch_properties_changed (object=0x7ffff7b764b4, n_pspecs=1434087776, pspecs=0x5555557ba880) at gobject.c:1056
  #7  0x00007ffff5ec88c1 in g_object_notify (pspec=<optimized out>, object=0x5555557bd180 [NMDeviceVlan])
      at gobject.c:1149
  #8  0x00007ffff5ec88c1 in g_object_notify (object=0x5555557bd180 [NMDeviceVlan], property_name=property_name@entry=0x7ffff7b772f6 "active-connection") at gobject.c:1197
  #9  0x00007ffff7ae57d3 in deferred_notify_cb (data=<optimized out>) at nm-object.c:246
  #10 0x00007ffff59beafb in g_main_context_dispatch (context=0x555555784ac0) at gmain.c:3111
  #11 0x00007ffff59beafb in g_main_context_dispatch (context=context@entry=0x555555784ac0) at gmain.c:3710
  #12 0x00007ffff59bee98 in g_main_context_iterate (context=0x555555784ac0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3781
  #13 0x00007ffff59bf1c2 in g_main_loop_run (loop=0x5555557699e0) at gmain.c:3975
  #14 0x000055555555811d in test_activate_virtual () at test-nm-client.c:1103
  #15 0x00007ffff59e4243 in g_test_run_suite_internal (tc=0x555555769a30) at gtestutils.c:2059
  #16 0x00007ffff59e4243 in g_test_run_suite_internal (suite=suite@entry=0x555555766640, path=path@entry=0x7ffff5a6355e "") at gtestutils.c:2120
  #17 0x00007ffff59e4412 in g_test_run_suite_internal (suite=suite@entry=0x555555766620, path=<optimized out>,
      path@entry=0x7ffff5a6355e "") at gtestutils.c:2131
  #18 0x00007ffff59e477b in g_test_run_suite (suite=0x555555766620) at gtestutils.c:2184
  #19 0x00007ffff59e47b1 in g_test_run () at gtestutils.c:1488
  #20 0x0000555555556c01 in main (argc=1, argv=0x7fffffffe028) at test-nm-client.c:1189

https://bugzilla.gnome.org/show_bug.cgi?id=739861

libnm/tests/test-nm-client.c

@@ -1007,7 +1007,7 @@ client_devices_changed_cb (GObject *client,
 		info->remaining--;
 	else {
 		g_signal_connect (device, "notify::" NM_DEVICE_ACTIVE_CONNECTION,
-		                  G_CALLBACK (device_ac_changed_cb), &info);
+		                  G_CALLBACK (device_ac_changed_cb), info);
 	}
 
 	info->remaining--;