Fix possible illegal memory access.
Fix possible illegal memory access.

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