don't resize iframe if we can't find a final size greater than 0
don't resize iframe if we can't find a final size greater than 0

tobiasd/friendica,dissolve/friendica,friendica/friendica,friendica/friendica,friendica/friendica,fabrixxm/friendica,fabrixxm/friendica,dissolve/friendica,friendica/friendica,dissolve/friendica,annando/friendica,annando/friendica,annando/friendica,tobiasd/friendica,tobiasd/friendica,tobiasd/friendica,tobiasd/friendica,dissolve/friendica,friendica/friendica,annando/friendica,fabrixxm/friendica,annando/friendica,dissolve/friendica,fabrixxm/friendica,fabrixxm/friendica