adapt coding style

js/reveal.js

@@ -699,7 +699,9 @@ var Reveal = (function(){
 	 * Updates the state and link pointers of the controls.
 	 */
 	function updateControls() {
-		if (!config.controls || !dom.controls) return;
+		if ( !config.controls || !dom.controls ) {
+			return;
+		}
 		
 		var routes = availableRoutes();