Fix an issue where PHP_EOL_COMMENT tokens were discarded on EOF
Summary:
There was no token production rule from state <PHP_EOL_COMMENT> on <<EOF>>.
NOTE: I didn't bump the xhpast version since this is such a minor edge case that it didn't seem worth the trouble.
Test Plan: Unit test now passes with a clean xhpast build.
Reviewers: nh
Reviewed By: nh
CC: aran
Maniphest Tasks: T1599
Differential Revision: https://secure.phabricator.com/D3154