If append_archive fails while writing an archive header, output the error

message from the archive being written (not the message from the archive
being read, where no error has occurred).

MFC after:	3 days

1 files changed, 1 insertions, 1 deletions

diff --git a/usr.bin/tar/write.c b/usr.bin/tar/write.c
index 7a0ae6c..f382750 100644
--- a/usr.bin/tar/write.c
+++ b/usr.bin/tar/write.c
@@ -488,7 +488,7 @@ append_archive(struct bsdtar *bsdtar, struct archive *a, const char *filename)
 		/* XXX handle/report errors XXX */
 		if (archive_write_header(a, in_entry)) {
 			bsdtar_warnc(bsdtar, 0, "%s",
-			    archive_error_string(ina));
+			    archive_error_string(a));
 			bsdtar->return_value = 1;
 			return (-1);
 		}