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/SystemMonitor/ThreadStackWidget.cpp

@@ -73,8 +73,7 @@ private:
 
 ThreadStackWidget::ThreadStackWidget()
 {
-    set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins(4);
+    set_layout<GUI::VerticalBoxLayout>(4);
     m_stack_table = add<GUI::TableView>();
     m_stack_table->set_model(adopt_ref(*new ThreadStackModel()));
 }