Build Tools: One additional coding standards fix now detected after [49514].

See #51624, #48301.
Built from https://develop.svn.wordpress.org/branches/5.2@49515


git-svn-id: http://core.svn.wordpress.org/branches/5.2@49270 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-customize-widgets.php

@@ -1857,7 +1857,7 @@ final class WP_Customize_Widgets {
 		// Render the widget.
 		ob_start();
 		dynamic_sidebar( $this->rendering_sidebar_id = $context['sidebar_id'] );
-		$container                                   = ob_get_clean();
+		$container = ob_get_clean();
 
 		// Reset variables for next partial render.
 		remove_filter( 'sidebars_widgets', $filter_callback, 1000 );