Fix database upgrader mediumtext support.

module/VuFind/sql/mysql.sql

@@ -171,7 +171,7 @@ CREATE TABLE `external_session` (
 /*!40101 SET character_set_client = utf8 */;
 CREATE TABLE `shortlinks` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `path` MEDIUMTEXT NOT NULL,
+  `path` mediumtext NOT NULL,
   `created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE utf8_bin;

module/VuFind/src/VuFind/Controller/Plugin/DbUpgrade.php

@@ -791,7 +791,9 @@ class DbUpgrade extends AbstractPlugin
 
         // If it's not a blob or a text (which don't have explicit sizes in our SQL),
         // we should see what the character length is, if any:
-        if ($type != 'blob' && $type != 'text' && $type != 'longtext') {
+        if ($type != 'blob' && $type != 'text' && $type !== 'mediumtext'
+            && $type != 'longtext'
+        ) {
             $charLen = $column->getCharacterMaximumLength();
             if ($charLen) {
                 $type .= '(' . $charLen . ')';