[gnome-chess] Fix code style

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 0babf56b89a2e36ef4e9dddc189b9ceb2c985f94
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Apr 24 12:18:33 2018 -0500

    Fix code style

 src/gnome-chess.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 62b2dc4..20070e6 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -1215,7 +1215,7 @@ Copyright © 2015–2016 Sahil Sareen""";
                 headerbar.set_title (_("Black is in Check"));
         }
         else if (game.current_state.last_move != null &&
-            game.current_state.last_move.en_passant)
+                 game.current_state.last_move.en_passant)
         {
             if (game.current_player.color == Color.WHITE)
                 headerbar.set_title (_("Black performed an en passant capture"));