Max expire date incorrectly uses "created" in strtotime()

The check on lines 88 and 91 of node_expre.nodeapi.inc (7.x-1.8) incorrectly passes the node's "created" date as the second parameter to strtotime(). E.g., if the max expiration date is +1 year, and I create a node on July 15th, 2015, I'll never be able to set an expiration date past July 15th, 2016. The correct behavior is for the max expiration date to work against the current date instead of the node's create date. This can be accomplished by simply removing the second parameter to strtotime(), which causes to use the current system time.