uuid module build fix on FreeBSD proposal

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-06-07.12:55:47.007>
labels = ['build', '3.10']
title = 'uuid module build fix on FreeBSD proposal'
updated_at = <Date 2020-09-16.23:51:22.988>
user = 'https://github.com/devnexen'

bugs.python.org fields:

activity = <Date 2020-09-16.23:51:22.988>
actor = 'dbaio'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Build', 'FreeBSD']
creation = <Date 2020-06-07.12:55:47.007>
creator = 'devnexen'
dependencies = []
files = []
hgrepos = []
issue_num = 40900
keywords = []
message_count = 5.0
messages = ['370906', '370907', '370953', '371158', '371472']
nosy_count = 5.0
nosy_names = ['christian.heimes', 'koobs', 'devnexen', 'TIGirardi', 'dbaio']
pr_nums = ['20693']
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue40900'
versions = ['Python 3.10']