Adding a 'Posts' menu on Top/Header Menu

Hello guys, I wanted to add on my own blog a simple and quick link to the page Posts, a shortcut so that I can go there with just 1-click than going to [My Site]/Panel (/wp-admin/) and there go to the Posts page.

So I created a simple code on ./wp-includes/admin-bar.php, after line 531 of the ‘Add New’ menu item, as follows:

/**
 * Add "Posts" menu.
 *
 * A shortcut by Zord :-)
 */

function wp_admin_bar_new_content_menu( $wp_admin_bar ) {
	$actions = array();

	if ( current_user_can( 'edit_posts' ) ) {
		$actions[ 'edit.php' ] = array();
	}

}

When I saved the file and reloaded, my blog gets an error 500, so I commented my code and here I am. I know I don’t need the $actions=array() but how can I would link to there?

I will appreciate your help! =)