Limit write requests to at most INT_MAX.
This prevents a certain common programming error (passing -1 to write)
from leading to other problems deeper in the library.
 _archive_write_data(struct archive *_a, const void *buff, size_t s)
 {
 	struct archive_write *a = (struct archive_write *)_a;
	const size_t max_write = INT_MAX;

 	archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
 	    ARCHIVE_STATE_DATA, "archive_write_data");
	/* In particular, this catches attempts to pass negative values. */
	if (s > max_write)
		s = max_write;
 	archive_clear_error(&a->archive);
 	return ((a->format_write_data)(a, buff, s));
 }

 _archive_write_data(struct archive *_a, const void *buff, size_t s)
 {
 	struct archive_write *a = (struct archive_write *)_a;
 	archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
 	    ARCHIVE_STATE_DATA, "archive_write_data");
 	archive_clear_error(&a->archive);
 	return ((a->format_write_data)(a, buff, s));
 }
