[gnome-chess] Fix style error

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 401fad221d053cf001e63bf6b5f14b04ac276f08
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Jul 23 13:01:29 2015 -0500

    Fix style error

 src/chess-engine.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/chess-engine.vala b/src/chess-engine.vala
index 2048cc5..2f9c928 100644
--- a/src/chess-engine.vala
+++ b/src/chess-engine.vala
@@ -60,7 +60,7 @@ public abstract class ChessEngine : Object
 
     ~ChessEngine ()
     {
-        assert(!started);
+        assert (!started);
     }
 
     public bool start ()