fix: Allow `clamd` to start normally when a whitelist is present. #2456

Job	Run time
check (libclamav, (iana_cctld\|bytecode_api_\|bytecode_hooks\|rijndael\|yara\|inffixed\|inflate\|queue\|n...	8s
check (libfreshclam)	14s
check (clamav-milter)	11s
check (clambc)	9s
check (clamconf)	8s
check (clamd)	14s
check (clamdscan)	12s
check (clamdtop)	9s
check (clamonacc, (c-thread-pool\|fts\|priv_fts))	15s
check (clamscan)	11s
check (clamsubmit)	9s
check (freshclam)	9s
check (libfreshclam)	11s
check (common)	18s
check (sigtool)	12s
check (examples)	15s
check (win32/compat)	16s
	3m 21s

Provide feedback