[quadrapassel] Start a new game when pause button pressed outside of a game

[Jeremy Bicha <jbicha src gnome org>]

commit 79fe179dcd0fec9ba0fe0c5c497c5d979025ea5f
Author: Chris Lamb <chris chris-lamb co uk>
Date:   Sun Sep 10 21:41:18 2017 +0100

    Start a new game when pause button pressed outside of a game
    
    This means you don't have to use a mouse to start a new game.
    
    Closes: https://gitlab.gnome.org/GNOME/quadrapassel/issues/16

 src/quadrapassel.vala | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
---
diff --git a/src/quadrapassel.vala b/src/quadrapassel.vala
index 8938d87..a0f9662 100644
--- a/src/quadrapassel.vala
+++ b/src/quadrapassel.vala
@@ -649,8 +649,16 @@ public class Quadrapassel : Gtk.Application
     {
         var keyval = upper_key (event.keyval);
 
-        if (game == null)
+        if (game == null) {
+            // Pressing pause with no game will start a new game.
+            if (keyval == upper_key (settings.get_int ("key-pause")))
+            {
+                new_game ();
+                return true;
+            }
+
             return false;
+        }
 
         if (keyval == upper_key (settings.get_int ("key-pause")))
         {