WYSIWIG Code Button Missing after update

This is the code in my functions file that is having problems in 4.6.

// TinyMCE: First line toolbar customizations
if( !function_exists('base_extended_editor_mce_buttons') ){
	function base_extended_editor_mce_buttons($buttons) {
		return array(
			'undo', 'redo', 'bullist', 'numlist', 'bold', 'italic', 'sub', 'sup', 'pastetext', 'link', 'unlink', 'wp_adv'
		);
	}
	add_filter("mce_buttons", "base_extended_editor_mce_buttons", 0);
}

// TinyMCE: Second line toolbar customizations
if( !function_exists('base_extended_editor_mce_buttons_2') ){
	function base_extended_editor_mce_buttons_2($buttons) {
		return array( 'formatselect', 'charmap', 'spellchecker', 'code');
	}
	add_filter("mce_buttons_2", "base_extended_editor_mce_buttons_2", 0);
}

// Add Buttons
add_filter( 'tiny_mce_before_init', 'my_custom_tinymce' );

function my_custom_tinymce( $init ) {
	$init['apply_source_formatting']=true;
	return $init;
}