libarchive: Use _snprintf on Windows, not snprintf

Utilities/cmlibarchive/libarchive/archive_read_support_format_zip.c

@@ -64,6 +64,10 @@ __FBSDID("$FreeBSD: head/lib/libarchive/archive_read_support_format_zip.c 201102
 #include "archive_crc32.h"
 #endif
 
+#if defined(_WIN32) && !defined(__CYGWIN__)
+# define snprintf _snprintf
+#endif
+
 struct zip_entry {
 	struct archive_rb_node	node;
 	struct zip_entry	*next;