GTK4: add missing semicolon :^|

rosenrot4.c

@@ -387,8 +387,7 @@ int handle_signal_keypress(void* self, GdkEvent* event, GtkNotebook* notebook)
 int main(int argc, char** argv)
 {
     /* Initialize GTK in general */
-    gtk_init()
-    #endif
+    gtk_init();
     g_object_set(gtk_settings_get_default(), GTK_SETTINGS_CONFIG_H, NULL); // https://docs.gtk.org/gobject/method.Object.set.html
     GtkCssProvider* css = gtk_css_provider_new();
     gtk_css_provider_load_from_path(css, "/opt/rosenrot/style.css");