[gtk/master.win32: 112/114] demos: Fix minesweeper demos on Windows

[Chun-wei Fan <fanchunwei src gnome org>]

commit c766e31e8f680723837d6a500fdf6e82bc969a2b
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Mon Sep 7 16:28:48 2020 +0800

    demos: Fix minesweeper demos on Windows
    
    Make sure the callback functions in the .ui files are exported, so that
    those functions can be recognized at runtime so that things run
    properly.

 demos/gtk-demo/listview_minesweeper.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/gtk-demo/listview_minesweeper.c b/demos/gtk-demo/listview_minesweeper.c
index 11ad0759be..f7f77d6231 100644
--- a/demos/gtk-demo/listview_minesweeper.c
+++ b/demos/gtk-demo/listview_minesweeper.c
@@ -429,7 +429,7 @@ sweeper_game_reveal_cell (SweeperGame *self,
   sweeper_game_check_finished (self);
 }
 
-void
+G_MODULE_EXPORT void
 minesweeper_cell_clicked_cb (GtkGridView *gridview,
                              guint        pos,
                              SweeperGame *game)
@@ -437,7 +437,7 @@ minesweeper_cell_clicked_cb (GtkGridView *gridview,
   sweeper_game_reveal_cell (game, pos);
 }
 
-void
+G_MODULE_EXPORT void
 minesweeper_new_game_cb (GtkButton   *button,
                          SweeperGame *game)
 {