dopewars: fix build with gcc15 (#508805)

diff --git a/src/gtkport/itemfactory.c b/src/gtkport/itemfactory.c

index b7a8c3f..980682c 100644

--- a/src/gtkport/itemfactory.c

+++ b/src/gtkport/itemfactory.c

@@ -217,7 +217,7 @@ void dp_gtk_item_factory_create_item(DPGtkItemFactory *ifactory,

   new_child->widget = menu_item;

   if (entry->callback) {

     g_signal_connect(G_OBJECT(menu_item), "activate",

-                     entry->callback, callback_data);

+                     G_CALLBACK(entry->callback), callback_data);

   }

   if (parent) {

diff --git a/src/gtkport/itemfactory.h b/src/gtkport/itemfactory.h

index a1d5b1d..2702595 100644

--- a/src/gtkport/itemfactory.h

+++ b/src/gtkport/itemfactory.h

@@ -59,7 +59,7 @@ GtkItemFactory *dp_gtk_item_factory_new(const gchar *path,

 typedef gchar *(*DPGtkTranslateFunc) (const gchar *path, gpointer func_data);

-typedef void (*DPGtkItemFactoryCallback) ();

+typedef void (*DPGtkItemFactoryCallback) (GtkWidget *widget, gpointer data);

 typedef struct _DPGtkItemFactoryEntry DPGtkItemFactoryEntry;

 typedef struct _DPGtkItemFactory DPGtkItemFactory;

    ncurses

  ];

  patches = [

    # remove the denied setting of setuid bit permission

  patches = [ ./0001-remove_setuid.patch ];

    ./0001-remove_setuid.patch

    # fix compilation errors with gcc15

    ./0002-fix_gcc15.patch

  ];

  # run dopewars with -f so that it finds its scoreboard file in ~/.local/share

  postInstall = ''