Improve logging for fuzzy errors.
Improve logging for fuzzy errors.

Suggested by:	@citrin

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