Update worker.class.php
Update worker.class.php

Fix for issue #957
sixxkilur/php-mpos,shreeneve/test,sixxkilur/php-mpos,bankonme/php-mpos,bankonme/php-mpos,sasselin/xcoin-mpos,studio666/php-mpos,shreeneve/test,studio666/php-mpos,sasselin/xcoin-mpos,sixxkilur/php-mpos,BlueDragon747/php-mpos,sasselin/xcoin-mpos,ychaim/php-mpos,mmitech/php-mpos,UNOMP/chunky-mpos,BlueDragon747/php-mpos,evgenyponomarev/pool,machinecoin-project/php-mpos,xisi/php-mpos,mmitech/php-mpos,MPOS/php-mpos,UNOMP/chunky-mpos,mculp/chunky-mpos,CoinHashMe/MPOS-SSO,CoinHashMe/MPOS-SSO,nimblecoin/web,bankonme/php-mpos,evgenyponomarev/pool,machinecoin-project/php-mpos,CoinHashMe/MPOS-SSO,CoinHashMe/MPOS-SSO,mculp/chunky-mpos,ychaim/php-mpos,nimblecoin/web,mculp/chunky-mpos,evgenyponomarev/pool,CoinHashMe/MPOS-SSO,MPOS/php-mpos,UNOMP/chunky-mpos,machinecoin-project/php-mpos,BlueDragon747/php-mpos,xisi/php-mpos,mmitech/php-mpos,mculp/chunky-mpos,nimblecoin/web,MPOS/php-mpos,shreeneve/test,xisi/php-mpos,studio666/php-mpos,UNOMP/chunky-mpos,ychaim/php-mpos