[metacity/gnome-3-18] data: use preferences-system-windows as metacity icon

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 9db82cab0cb06b5d3dd39a199f73cfa840d410ca
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Feb 22 14:56:42 2016 +0200

    data: use preferences-system-windows as metacity icon
    
    https://bugzilla.gnome.org/show_bug.cgi?id=759310

 src/metacity.desktop.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/metacity.desktop.in b/src/metacity.desktop.in
index 220ed51..884f8f5 100644
--- a/src/metacity.desktop.in
+++ b/src/metacity.desktop.in
@@ -2,6 +2,7 @@
 Type=Application
 _Name=Metacity
 Exec=metacity
+Icon=preferences-system-windows
 NoDisplay=true
 # name of loadable control center module
 X-GNOME-WMSettingsModule=metacity