[gnome-calculator] Fallback app menu: set app icon

[Michael Catanzaro <mcatanzaro src gnome org>]

commit ae1249ee93aee499f93e2d035107701c5234ed10
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Nov 25 12:22:59 2013 -0600

    Fallback app menu: set app icon
    
    https://bugzilla.gnome.org/show_bug.cgi?id=705909

 src/math-window.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/math-window.vala b/src/math-window.vala
index 72898b5..ee06589 100644
--- a/src/math-window.vala
+++ b/src/math-window.vala
@@ -27,6 +27,7 @@ public class MathWindow : Gtk.ApplicationWindow
         _equation = equation;
         set_title (/* Title of main window */
                    _("Calculator"));
+        icon_name = "gnome-calculator";
         role = "gnome-calculator";
         resizable = false;
 
@@ -121,4 +122,4 @@ public class MathWindow : Gtk.ApplicationWindow
         else
             right_aligned = false;
     }
-}
\ No newline at end of file
+}