[gtk+/wip/combo] Make 'show more' rows same height

[Matthias Clasen <matthiasc src gnome org>]

commit 1673f92dae6c393d88de9c9289250e092fd2c710
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 6 12:55:03 2015 -0500

    Make 'show more' rows same height
    
    This fixes a cosmetic issue with those rows.

 gtk/ui/gtkcombo.ui    |    8 ++++++++
 gtk/ui/gtkcombotab.ui |    8 ++++++++
 2 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/gtk/ui/gtkcombo.ui b/gtk/ui/gtkcombo.ui
index 8f6a919..23811d2 100644
--- a/gtk/ui/gtkcombo.ui
+++ b/gtk/ui/gtkcombo.ui
@@ -184,4 +184,12 @@
       <widget name="stack"/>
     </widgets>
   </object>
+  <object class="GtkSizeGroup">
+    <property name="mode">vertical</property>
+    <property name="ignore-hidden">False</property>
+    <widgets>
+      <widget name="show_more"/>
+      <widget name="add_custom"/>
+    </widgets>
+  </object>
 </interface>
diff --git a/gtk/ui/gtkcombotab.ui b/gtk/ui/gtkcombotab.ui
index a3d0755..d3346d9 100644
--- a/gtk/ui/gtkcombotab.ui
+++ b/gtk/ui/gtkcombotab.ui
@@ -39,4 +39,12 @@
       </object>
     </child>
   </object>
+  <object class="GtkSizeGroup">
+    <property name="mode">vertical</property>
+    <property name="ignore-hidden">False</property>
+    <widgets>
+      <widget name="header"/>
+      <widget name="show_more"/>
+    </widgets>
+  </object>
 </interface>