PHP 7.3 not supported

Problem/Motivation

Pollanon not support PHP 7.3

Steps to reproduce

Install module on php 7.3 envrionment
Create a poll with pollanon
Submit the button will get error "Cookie support required to anonymous voting" and with php warning
Warning: time() expects exactly 0 parameters, 1 given in _pollanon_validate_request() (line 155 of .../pollanon/pollanon.module).

Proposed resolution

https://bugs.php.net/bug.php?id=78509
Create patch according above

Calling the "time()" function with a parameter works fine in PHP <= 7.2.x and returns an int. In PHP 7.3, it returns NULL and produces a "Warning: time() expects exactly 0 parameters, 1 given" message instead.

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A