[gnome-builder] glade: tweak icon size for toolbar

[Christian Hergert <chergert src gnome org>]

commit fb9c189a178000eea39779572040c50c1dcbf0d4
Author: Christian Hergert <chergert redhat com>
Date:   Mon Oct 22 10:55:26 2018 -0700

    glade: tweak icon size for toolbar

 src/plugins/glade/gbp-glade-view.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/glade/gbp-glade-view.c b/src/plugins/glade/gbp-glade-view.c
index 82ec6811c..f14556051 100644
--- a/src/plugins/glade/gbp-glade-view.c
+++ b/src/plugins/glade/gbp-glade-view.c
@@ -158,6 +158,7 @@ gbp_glade_view_init (GbpGladeView *self)
 
       image = g_object_new (GTK_TYPE_IMAGE,
                             "icon-name", pointers[i].icon_name,
+                            "pixel-size", 16,
                             "visible", TRUE,
                             NULL);
       button = g_object_new (GTK_TYPE_BUTTON,