Please consider upgrading to a more recent release of lpr. The current
snapshot is from 2008 (over 13 years ago), and lpr development has
continued upstream. This includes various bug fixes, e.g., those listed
in the following commit logs:
https://cvsweb.openbsd.org/src/usr.sbin/lpr/lpc/cmds.c
https://cvsweb.openbsd.org/src/usr.sbin/lpr/common_source/startdaemon.c

Best,
Ryan