[Fix] Fix parsing of unquoted HTML attributes
[Fix] Fix parsing of unquoted HTML attributes

Issue: #1092
Reported by: @moisseev

AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd,AlexeySa/rspamd