[totem] Add context to "Play" button label string

[Piotr Drąg <piotrdrag src gnome org>]

commit 7276b12d0b211c325ea932cea703e3652304a642
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Sep 25 16:50:19 2015 +0200

    Add context to "Play" button label string

 src/totemselectiontoolbar.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/totemselectiontoolbar.ui b/src/totemselectiontoolbar.ui
index 4cf06cb..c47d019 100644
--- a/src/totemselectiontoolbar.ui
+++ b/src/totemselectiontoolbar.ui
@@ -37,7 +37,7 @@
           <property name="can_focus">True</property>
           <property name="receives_default">True</property>
           <property name="no-show-all">True</property>
-          <property name="label" translatable="yes">Play</property>
+          <property name="label" translatable="yes" context="button">Play</property>
           <child internal-child="accessible">
             <object class="AtkObject" id="play-atkobject">
               <property name="AtkObject::accessible-name" translatable="yes">Play</property>