[iagno] Return value that didn't make sense.

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 674ef431ab8773d551eb3f876ec2786641da0772
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Aug 29 23:58:32 2014 +0200

    Return value that didn't make sense.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735615

 src/game.vala |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/src/game.vala b/src/game.vala
index 5f58f07..ec5d3ea 100644
--- a/src/game.vala
+++ b/src/game.vala
@@ -104,11 +104,9 @@ public class Game : Object
     }
 
     public Player get_owner (int x, int y)
+        requires (is_valid_location (x, y))
     {
-        if (is_valid_location (x, y))
-            return tiles[x, y];
-        else
-            return Player.NONE;
+        return tiles[x, y];
     }
 
     public bool is_complete ()