Merge pull request phpredis#1366 from remicollet/issue-php73

Fix: Warning: time() expects exactly 0 parameters, 1 given ... (php 7.3)

Author: yatsukhnenko

tests/RedisTest.php

@@ -452,7 +452,7 @@ public function testSetTimeout() {
     public function testExpireAt() {
         $this->redis->del('key');
         $this->redis->set('key', 'value');
-        $now = time(NULL);
+        $now = time();
         $this->redis->expireAt('key', $now + 1);
         $this->assertEquals('value', $this->redis->get('key'));
         sleep(2);