[iagno] Little highlight fix.

[Arnaud B. <arnaudb src gnome org>]

commit b2904b19adee40be252016bf38953b8b5c884f54
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Feb 16 16:34:40 2019 +0100

    Little highlight fix.

 src/game-view.vala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/game-view.vala b/src/game-view.vala
index af68c4b..f0a9d05 100644
--- a/src/game-view.vala
+++ b/src/game-view.vala
@@ -415,7 +415,8 @@ private class GameView : Gtk.DrawingArea
                             get_pixmap (game.get_owner (x, y)),
                             /* force redraw */ true);
                 // no highliqht animation after undo
-                highlight_state = HIGHLIGHT_MAX;
+                if (!game.is_complete)
+                    highlight_state = HIGHLIGHT_MAX;
             }
 
             // set highlight on undone play position