supress warnings in opcache_reset() fixes #4375

If opcache is enabled, but access to it's API is restricted a warning is
shown when we call opcache_reset(). Since we don't know if it's
restricted, we have to supress the warning

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/plugins/extension/Installer.php b/lib/plugins/extension/Installer.php
index 9307b57d0..e08f1da52 100644
--- a/lib/plugins/extension/Installer.php
+++ b/lib/plugins/extension/Installer.php
@@ -361,7 +361,7 @@ class Installer
         @touch(reset($config_cascade['main']['local']));
 
         if (function_exists('opcache_reset')) {
-            opcache_reset();
+            @opcache_reset();
         }
     }