Merge branch 'QA_4_7'

ChangeLog

@@ -112,6 +112,7 @@ phpMyAdmin - ChangeLog
 - issue #13088 Fixed editing of rows with text primary key
 - issue #13092 Do not try to sync favorite tables if configuration storage is not enabled
 - issue #13105 Fixed changing attribute for virtual field
+- issue #12757 Fixed setting password on recent MariaDB with non working plugins
 
 4.6.6 (2017-01-23)
 - issue #12759 Fix Notice regarding 'Undefined index: old_usergroup'

libraries/server_privileges.lib.php

@@ -5048,10 +5048,15 @@ function PMA_checkIfMariaDBPwdCheckPluginActive()
         return false;
     }
 
-    $result = $GLOBALS['dbi']->query(
+    $result = $GLOBALS['dbi']->tryQuery(
         'SHOW PLUGINS SONAME LIKE \'%_password_check%\''
     );
 
+    /* Plugins are not working, for example directory does not exists */
+    if ($result === false) {
+        return false;
+    }
+
     while ($row = $GLOBALS['dbi']->fetchAssoc($result)) {
         if ($row['Status'] === 'ACTIVE') {
             return true;