cleanup: Only omit braces for single-line blocks

Braces can be avoided when a block consists of a single statement,
but readability suffers when the statement spans more than a single
line.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805

js/ui/keyboard.js

@@ -1307,9 +1307,10 @@ class Keyboard extends St.BoxLayout {
         this._connectSignal(global.stage, 'notify::key-focus',
             this._onKeyFocusChanged.bind(this));
 
-        if (Meta.is_wayland_compositor())
+        if (Meta.is_wayland_compositor()) {
             this._connectSignal(this._keyboardController, 'emoji-visible',
                 this._onEmojiKeyVisible.bind(this));
+        }
 
         this._relayout();
     }