Fix issue where setExpires(0) works, but $expires=0 doesn't work in the constructor. Remove redundant input checking from constrcutor in favor of that offered by the set*() methods.
Fix issue where setExpires(0) works, but $expires=0 doesn't work in the constructor. Remove redundant input checking from constrcutor in favor of that offered by the set*() methods.

zendframework/zend-http,malinink/zend-http,Maks3w/zend-http,weierophinney/zend-http,netroby/zend-http,asgrim/zend-http