[gnome-nibbles] Fix new game button unpausing the game

[Iulian Radu <iulianradu src gnome org>]

commit d2ae20791192814e49805e78440ae837cbb635dc
Author: Razvan Chitu <razvan ch95 gmail com>
Date:   Thu Sep 17 22:13:33 2015 +0300

    Fix new game button unpausing the game
    
    https://bugzilla.gnome.org/show_bug.cgi?id=754608

 src/gnome-nibbles.vala |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/src/gnome-nibbles.vala b/src/gnome-nibbles.vala
index 7aa81fb..9a22a1d 100644
--- a/src/gnome-nibbles.vala
+++ b/src/gnome-nibbles.vala
@@ -356,7 +356,8 @@ public class Nibbles : Gtk.Application
 
     private void new_game_cb ()
     {
-        pause_cb ();
+        if (game.is_running)
+            game.stop ();
 
         var dialog = new Gtk.MessageDialog (window,
                                             Gtk.DialogFlags.MODAL,
@@ -370,8 +371,12 @@ public class Nibbles : Gtk.Application
         dialog.response.connect ((response_id) => {
             if (response_id == Gtk.ResponseType.OK)
                 show_new_game_screen_cb ();
-            if (response_id == Gtk.ResponseType.CANCEL)
-                game.unpause ();
+            if ((response_id == Gtk.ResponseType.CANCEL || response_id == Gtk.ResponseType.DELETE_EVENT)
+                && !game.is_paused)
+            {
+                game.start ();
+                view.grab_focus ();
+            }
 
             dialog.destroy ();
         });