PHP 7 Compatibility

I ran the PHP Compatibility Checker plugin https://www.ads-software.com/plugins/php-compatibility-checker/
checking for PHP 7 compatibility and got this result for this plugin:

FILE: wp-content/plugins/add-link-to-facebook/add-link-to-facebook-int.php
-------------------------------------------------------------------------------------
FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
-------------------------------------------------------------------------------------
 1871 | WARNING | INI directive 'safe_mode' is deprecated since PHP 5.3 and removed since PHP 5.4.
-------------------------------------------------------------------------------------

FILE: wp-content/plugins/add-link-to-facebook/add-link-to-facebook-debug.php
-------------------------------------------------------------------------------------
FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
-------------------------------------------------------------------------------------
 66 | WARNING | INI directive 'safe_mode' is deprecated since PHP 5.3 and removed since PHP 5.4.
-------------------------------------------------------------------------------------

FILE: wp-content/plugins/add-link-to-facebook/add-link-to-facebook-class.php
-------------------------------------------------------------------------------------
FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
-------------------------------------------------------------------------------------
  342 | WARNING | INI directive 'safe_mode' is deprecated since PHP 5.3 and removed since PHP 5.4.
 2320 | ERROR   | Using 'break' outside of a loop or switch structure is invalid and will throw a fatal error since PHP 7.0
-------------------------------------------------------------------------------------

FILE: wp-content/plugins/add-link-to-facebook/add-link-to-facebook-widget.php
-------------------------------------------------------------------------------------
FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
-------------------------------------------------------------------------------------
   9 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
 233 | ERROR   | Using 'break' outside of a loop or switch structure is invalid and will throw a fatal error since PHP 7.0
-------------------------------------------------------------------------------------

FILE: wp-content/plugins/add-link-to-facebook/add-link-to-facebook.php
-------------------------------------------------------------------------------------
FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
-------------------------------------------------------------------------------------
 43 | WARNING | Function name "__autoload_al2fb" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
-------------------------------------------------------------------------------------