File 0005-fix-gcc12-werror-address.patch of Package utsushi

--- gtkmm/file-chooser.cpp	2022-05-24 21:03:51.102152372 +0200
+++ gtkmm/file-chooser.cpp	2022-05-24 21:34:25.226183683 +0200
@@ -268,7 +268,7 @@
                          " format or use one of the known file extensions."))
             % ext).str ());

-        if (dynamic_cast< Gtk::Window * > (this))
+        if (auto *ptr = dynamic_cast< Gtk::Window * > (this); ptr != nullptr)
           get_group ()->add_window (tbd);

         tbd.run ();
@@ -293,7 +293,7 @@
                            " a filename such as 'Untitled-%%3i%2%'."))
               % fmt % get_current_extension ()).str ());

-          if (dynamic_cast< Gtk::Window * > (this))
+          if (auto *ptr = dynamic_cast< Gtk::Window * > (this); ptr != nullptr)
             get_group ()->add_window (tbd);

           tbd.run ();
@@ -346,7 +346,7 @@
   tbd.add_button (Gtk::Stock::YES, Gtk::RESPONSE_ACCEPT);
   tbd.set_default_response (Gtk::RESPONSE_ACCEPT);

-  if (dynamic_cast< Gtk::Window * > (this))
+  if (auto *ptr = dynamic_cast< Gtk::Window * > (this); ptr != nullptr)
     get_group ()->add_window (tbd);

   if (Gtk::RESPONSE_ACCEPT != tbd.run ())