quadrapassel: fix segfault on start

Prior to this change, quadrapassel sometimes segfaults shortly after
starting.

This bug is fixed upstream:
https://gitlab.gnome.org/GNOME/quadrapassel/-/issues/39
I have included their changes as a patch.

srcpkgs/quadrapassel/patches/0001-Fixed-Seg-fault-due-to-game-object-not-being-created.patch

@@ -0,0 +1,32 @@
+From 8704e0fbcd994df45f2492c58f6ac261bfeb382f Mon Sep 17 00:00:00 2001
+From: John Ward <john@johnward.net>
+Date: Thu, 24 Jun 2021 21:48:41 +0100
+Subject: [PATCH] Fixed Seg fault due to game object not being created, it was
+ trying to start a new game with no game object on a key press
+
+---
+ src/quadrapassel.vala | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/src/quadrapassel.vala b/src/quadrapassel.vala
+index 1ef47fc..d2255f7 100644
+--- a/src/quadrapassel.vala
++++ b/src/quadrapassel.vala
+@@ -661,9 +661,12 @@ public class Quadrapassel : Gtk.Application
+     {
+         var keyval = upper_key (event.keyval);
+ 
+-        if (game.game_over && keyval == upper_key (settings.get_int ("key-start")))
++        if (game != null)
+         {
+-            new_game();
++            if (game.game_over && keyval == upper_key (settings.get_int ("key-start")))
++            {
++                new_game();
++            }
+         }
+ 
+         if (game == null) {
+-- 
+2.50.1
+

srcpkgs/quadrapassel/template

@@ -1,7 +1,7 @@
 # Template file for 'quadrapassel'
 pkgname=quadrapassel
 version=40.2
-revision=1
+revision=2
 build_style=meson
 hostmakedepends="gettext glib-devel itstool pkg-config vala"
 makedepends="gsound-devel gtk+3-devel libglib-devel libcanberra-devel