Fix remaining build failure on FreeBSD Current.

diff --git a/libarchive/archive_string.c b/libarchive/archive_string.c
index 1dce5600e44bd5852aa87e9548016f38522f07d7..bd4bd1abbd9df93519db5b2785562c3c1007abca 100644 (file)
--- a/libarchive/archive_string.c
+++ b/libarchive/archive_string.c
@@ -849,7 +849,7 @@ archive_string_append_from_wcs(struct archive_string *as,
                        }
                }
                as->length += r;
-               if (wp == NULL || (wp - wpp) >= nwc)
+               if (wp == NULL || (wp - wpp) >= (int64_t)nwc)
                        break;
                /* Get a remaining WCS lenth. */
                nwc -= wp - wpp;