[gnome-sudoku] Check visibility of earmark picker properly

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2f3fb414d462f37dc629e34fd5984e9c0cd62211
Author: shak-mar <shakmar openmailbox org>
Date:   Mon Oct 14 14:50:59 2019 +0200

    Check visibility of earmark picker properly
    
    See show_earmark_picker() in the same source file.  The earmark picker
    is actually shown inside the earmark_popover.  Only the earmark_popover
    is hidden when it loses focus, while the earmark picker always has
    visibility true, which makes the check useless.
    
    This fixes #33, which was caused by
    1e8ebc849807df0e227c7a8f90f69b17c93e0d40.

 src/sudoku-view.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/sudoku-view.vala b/src/sudoku-view.vala
index 93c6cbc..33be96c 100644
--- a/src/sudoku-view.vala
+++ b/src/sudoku-view.vala
@@ -284,7 +284,7 @@ private class SudokuCellView : Gtk.DrawingArea
             k_no = key_map_keypad (k_name);
         if (k_no >= 1 && k_no <= 9)
         {
-            bool want_earmark = (earmark_picker != null && earmark_picker.is_visible ())
+            bool want_earmark = (earmark_popover != null && earmark_popover.is_visible ())
                 || (event.state & ModifierType.CONTROL_MASK) > 0;
             if (want_earmark && game.mode == GameMode.PLAY)
             {