Merge pull request #2766 from mostynb/fix_mac_signed_unsigned_comparison

Fix signed-unsigned comparison in add_trivial_nfs4_acl

libarchive/archive_disk_acl_darwin.c

@@ -124,7 +124,6 @@ static void
 add_trivial_nfs4_acl(struct archive_entry *entry)
 {
 	mode_t mode;
-	int i;
 	const int rperm = ARCHIVE_ENTRY_ACL_READ_DATA;
 	const int wperm = ARCHIVE_ENTRY_ACL_WRITE_DATA |
 	    ARCHIVE_ENTRY_ACL_APPEND_DATA;
@@ -195,7 +194,7 @@ add_trivial_nfs4_acl(struct archive_entry *entry)
 	} else if ((mode & 0010) || (mode & 0001))
 		tacl_entry[1].permset |= eperm;
 
-	for (i = 0; i < sizeof(tacl_entry) / sizeof(tacl_entry[0]); i++) {
+	for (size_t i = 0; i < sizeof(tacl_entry) / sizeof(tacl_entry[0]); i++) {
 		if (tacl_entry[i].permset != 0) {
 			archive_entry_acl_add_entry(entry,
 			    tacl_entry[i].type, tacl_entry[i].permset,