[empathy] add translator comment for the sanity-cleaning-number key

[Guillaume Desmottes <gdesmott src gnome org>]

commit 605f872bdc6cc6a1d9534c98054df66e8b6fc964
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Thu Mar 22 10:43:51 2012 +0100

    add translator comment for the sanity-cleaning-number key
    
    https://bugzilla.gnome.org/show_bug.cgi?id=672608

 data/org.gnome.Empathy.gschema.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/org.gnome.Empathy.gschema.xml.in b/data/org.gnome.Empathy.gschema.xml.in
index 8901d21..c1ac758 100644
--- a/data/org.gnome.Empathy.gschema.xml.in
+++ b/data/org.gnome.Empathy.gschema.xml.in
@@ -30,6 +30,7 @@
     </key>
     <key name="sanity-cleaning-number" type="u">
       <default>0</default>
+      <!-- translators: Automatic tasks which are run once to port/update account settings. Ideally, this shouldn't be exposed to users at all, we just use a gsettings key here as an optimization to only run it only once. -->
       <_summary>Magic number used to check if sanity cleaning tasks should be run</_summary>
       <_description>empathy-sanity-cleaning.c uses this number to check if the cleaning tasks should be executed or not. Users should not change this key manually.</_description>
     </key>