Prevent warnings when invalidating the cache

[rolandschuetz]

Easyname uses OPcache, but restricts the opcache_invalidate() usage.

Therefore Easyname Hosting the following warning in thrown:

Warning: Zend OPcache API is restricted by "restrict_api" configuration directive in system/modules/rocksolid-custom-elements/src/MadeYourDay/Contao/CustomElements.php on line 1262
#0 [internal function]: __error(2, 'Zend OPcache AP...', '/data/web/e2850...', 1262, Array)
#1 system/modules/rocksolid-custom-elements/src/MadeYourDay/Contao/CustomElements.php(1262): opcache_invalidate('/data/web/e2850...', true)
#2 system/modules/rocksolid-custom-elements/src/MadeYourDay/Contao/CustomElements.php(1237): MadeYourDay\Contao\CustomElements::refreshOpcodeCache('/data/web/e2850...')
#3 system/modules/rocksolid-custom-elements/src/MadeYourDay/Contao/CustomElements.php(1247): MadeYourDay\Contao\CustomElements::loadConfig(true)
#4 system/modules/rocksolid-custom-elements/src/MadeYourDay/Contao/CustomElements.php(54): MadeYourDay\Contao\CustomElements::reloadConfig()
#5 system/modules/core/drivers/DC_Table.php(208): MadeYourDay\Contao\CustomElements->onloadCallback(Object(sioweb\contao\extensions\backend\DC_Table))
#6 system/modules/SWBackend/drivers/DC_Table.php(40): Contao\DC_Table->__construct('tl_content', Array)
#7 system/modules/SWBackend/classes/Backend.php(138): sioweb\contao\extensions\backend\DC_Table->__construct('tl_content', Array)
#8 contao/main.php(142): Backend->getBackendModule('article')
#9 contao/main.php(293): Main->run()
#10 {main}

[ausi]

I think this is a problem of Easyname. They should either remove the method completely so that function_exists('opcache_invalidate') returns false or add the option to disable the warning messages.