[gnome-builder] terminal: set icon for split action

[Christian Hergert <chergert src gnome org>]

commit 3fd94ce6918b4086ab89488db378d84f07fdccce
Author: Christian Hergert <chergert redhat com>
Date:   Thu Nov 23 19:12:34 2017 -0800

    terminal: set icon for split action

 src/plugins/terminal/gtk/menus.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/terminal/gtk/menus.ui b/src/plugins/terminal/gtk/menus.ui
index 08671d3..140c708 100644
--- a/src/plugins/terminal/gtk/menus.ui
+++ b/src/plugins/terminal/gtk/menus.ui
@@ -47,6 +47,7 @@
         <attribute name="label" translatable="yes">Split</attribute>
         <attribute name="action">layoutstack.split-view</attribute>
         <attribute name="target" type="s">''</attribute>
+        <attribute name="verb-icon-name">builder-split-tab-symbolic</attribute>
       </item>
       <item>
         <attribute name="label" translatable="yes">Reset</attribute>