[zendframework/zf2#2717] CS fixes
[zendframework/zf2#2717] CS fixes

- Trailing whitespace

zendframework/zend-validator,svycka/zend-validator,ezimuel/zend-validator,Maks3w/zend-validator,akrabat/zend-validator,weierophinney/zend-validator,zf2timo/zend-validator