More appropriate abstraction (throw exception instead of dying with non-object...

More appropriate abstraction (throw exception instead of dying with non-object error if table manager not assigned).

module/VuFind/src/VuFind/Session/AbstractBase.php

@@ -204,6 +204,6 @@ abstract class AbstractBase implements SaveHandlerInterface,
      */
     protected function getTable($table)
     {
-        return $this->tableManager->get($table);
+        return $this->getDbTableManager()->get($table);
     }
 }
\ No newline at end of file

module/VuFind/src/VuFind/Statistics/Driver/Db.php

@@ -136,6 +136,6 @@ class Db extends AbstractBase implements \VuFind\Db\Table\DbTableAwareInterface
      */
     protected function getTable($table)
     {
-        return $this->tableManager->get($table);
+        return $this->getDbTableManager()->get($table);
     }
 }