[gimp/gimp-2-10] app: fix linking of test-config

[Ell <ell src gnome org>]

commit 05d30d95e1745a651efc1b259e0cfcc4e543174a
Author: Ell <ell_se yahoo com>
Date:   Tue May 29 17:07:31 2018 -0400

    app: fix linking of test-config
    
    (cherry picked from commit e75bdf3acf17af79e3f8541fbf5aede8c1e0511c)

 app/config/Makefile.am | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/app/config/Makefile.am b/app/config/Makefile.am
index 7780250d9e..c3df49f3bc 100644
--- a/app/config/Makefile.am
+++ b/app/config/Makefile.am
@@ -93,7 +93,9 @@ test_config_LDFLAGS = \
        -Wl,-u,$(SYMPREFIX)internal_procs_init                  \
        -Wl,-u,$(SYMPREFIX)gimp_plug_in_manager_restore         \
        -Wl,-u,$(SYMPREFIX)gimp_pdb_compat_param_spec           \
-       -Wl,-u,$(SYMPREFIX)gimp_layer_mode_is_legacy
+       -Wl,-u,$(SYMPREFIX)gimp_layer_mode_is_legacy            \
+       -Wl,-u,$(SYMPREFIX)gimp_async_set_new                   \
+       -Wl,-u,$(SYMPREFIX)gimp_uncancelable_waitable_new
 
 test_config_LDADD = \
        ../xcf/libappxcf.a                                              \