ClamOnAcc: Fix infinite loop when OnAccessIncludePath doesn't exist (1.0.8) #2601

Job	Run time
check (libclamav, (iana_cctld\|bytecode_api_\|bytecode_hooks\|rijndael\|yara\|inffixed\|inflate\|queue\|t...	7s
check (libfreshclam)	8s
check (clamav-milter)	13s
check (clambc)	7s
check (clamconf)	7s
check (clamd)	13s
check (clamdscan)	9s
check (clamdtop)	7s
check (clamonacc, (c-thread-pool\|fts\|priv_fts))	13s
check (clamscan)	9s
check (clamsubmit)	8s
check (freshclam)	9s
check (libfreshclam)	8s
check (common)	18s
check (sigtool)	8s
check (examples)	13s
check (win32/compat)	13s
	2m 50s

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