[ticket/13740] Tasks can appear as multiple steps for the progress bar

PHPBB3-13740

phpBB/install/module/install_database/task/create_schema.php

@@ -196,6 +196,14 @@ class create_schema extends \phpbb\install\task_base
 		}
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	static public function get_step_count()
+	{
+		return 1;
+	}
+
 	/**
 	 * {@inheritdoc}
 	 */