Windows: json-c 0.17 compatibility with ssize_t type definition #1917

Job	Run time
check (libclamav, (iana_cctld\|bytecode_api_\|bytecode_hooks\|rijndael\|yara\|inffixed\|inflate\|queue\|n...	23s
check (libfreshclam)	23s
check (clamav-milter)	23s
check (clambc)	28s
check (clamconf)	26s
check (clamd)	27s
check (clamdscan)	22s
check (clamdtop)	23s
check (clamonacc, (c-thread-pool\|fts\|priv_fts))	26s
check (clamscan)	26s
check (clamsubmit)	26s
check (freshclam)	28s
check (libfreshclam)	22s
check (common)	30s
check (sigtool)	29s
check (examples)	23s
check (win32/compat)	24s
	7m 9s

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