Fix timeout getting changed to 60 seconds when set to 0 (unlimited)

[mikeytown2]

When running from the command line the timeout is usually 0 (unlimited); looking at the code it doesn't take this into account and assumes that 60 is higher than 0 in this case.

[AntonEvers]

@mikeytown2 your pull request has a bug: in the if ($name === 'max_execution_time' && $current > 0 && $current < $suggested) { you exclude 0 from being overwritten to 60. But in elseif ($current > -1 && ($suggested == -1 || $current < $suggested)) { the 0 value is changed to $suggested nonetheless. So your fix only treats -1 as unlimited effectively.