[gnome-chess] Add missing newline to error message

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 56d3556124a2a6ea8e41b5ef7a856256387897fe
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Wed Nov 15 15:12:02 2017 -0600

    Add missing newline to error message

 src/chess-view.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/chess-view.vala b/src/chess-view.vala
index acc6b0c..85cbc0b 100644
--- a/src/chess-view.vala
+++ b/src/chess-view.vala
@@ -63,7 +63,7 @@ public class ChessView : Gtk.DrawingArea
         }
         catch (Error e)
         {
-            stderr.printf ("Failed to load piece svg: %s", e.message);
+            stderr.printf ("Failed to load piece svg: %s\n", e.message);
             return;
         }