Userland: Specify margins and spacing in the GUI::Layout constructor

Author: https://github.com/AtkinsSJ
Commit: 77ad0fdb07
Pull-request: https://github.com/SerenityOS/serenity/pull/17495
Reviewed-by: https://github.com/awesomekling ✅

Userland/Applications/ImageViewer/MainWidget.cpp

@@ -11,8 +11,7 @@ namespace ImageViewer {
 MainWidget::MainWidget()
 {
     set_fill_with_background_color(true);
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_spacing(2);
+    set_layout<GUI::VerticalBoxLayout>(GUI::Margins {}, 2);
 }
 
 void MainWidget::keydown_event(GUI::KeyEvent& event)