added two return statements comitted by Marius Tomaschewski

src/charon/sa/connect_manager.c

@@ -1240,7 +1240,8 @@ static job_requeue_t initiate_mediated(initiate_data_t *data)
 	}
 	else
 	{
-		// this should (can?) not happen
+		/* this should (can?) not happen */
+		return JOB_REQUEUE_NONE;
 	}
 }