Fix `register_symbols` lua function.
Fix `register_symbols` lua function.

andrejzverev/rspamd,amohanta/rspamd,andrejzverev/rspamd,dark-al/rspamd,AlexeySa/rspamd,andrejzverev/rspamd,andrejzverev/rspamd,andrejzverev/rspamd,awhitesong/rspamd,amohanta/rspamd,minaevmike/rspamd,AlexeySa/rspamd,minaevmike/rspamd,amohanta/rspamd,AlexeySa/rspamd,minaevmike/rspamd,dark-al/rspamd,amohanta/rspamd,AlexeySa/rspamd,andrejzverev/rspamd,awhitesong/rspamd,minaevmike/rspamd,andrejzverev/rspamd,minaevmike/rspamd,AlexeySa/rspamd,dark-al/rspamd,minaevmike/rspamd,awhitesong/rspamd,andrejzverev/rspamd,dark-al/rspamd,minaevmike/rspamd,AlexeySa/rspamd,amohanta/rspamd,minaevmike/rspamd,AlexeySa/rspamd,dark-al/rspamd,minaevmike/rspamd,AlexeySa/rspamd,awhitesong/rspamd,AlexeySa/rspamd