#4249# Fixed missing schema descriptor install

plugins/generic/referral/ReferralPlugin.inc.php

@@ -178,6 +178,13 @@ class ReferralPlugin extends GenericPlugin {
 		return Locale::translate('plugins.generic.referral.description');
 	}
 
+	/**
+	 * Get the filename of the ADODB schema for this plugin.
+	 */
+	function getInstallSchemaFile() {
+		return $this->getPluginPath() . '/' . 'schema.xml';
+	}
+
 	/**
 	 * Check whether or not this plugin is enabled
 	 * @return boolean