Fix lint

Author: danirabbit

src/AbstractBubble.vala

@@ -44,7 +44,7 @@ public class Notifications.AbstractBubble : Gtk.Window {
         draw_area.add_css_class ("draw-area");
         draw_area.append (content_area);
 
-        var close_button = new Gtk.Button.from_icon_name ("window-close-symbolic")  {
+        var close_button = new Gtk.Button.from_icon_name ("window-close-symbolic") {
             halign = Gtk.Align.START,
             valign = Gtk.Align.START
         };

src/Confirmation.vala

@@ -50,7 +50,7 @@ public class Notifications.Confirmation : AbstractBubble {
 
         content_area.add_child (contents);
 
-        add_css_class("confirmation");
+        add_css_class ("confirmation");
 
         bind_property ("icon-name", image, "icon-name");
         bind_property ("progress", progressbar, "fraction", SYNC_CREATE);