check handle validity when closing a file

This eliminates an assertion under Windows that occurs when an archive cannot be
opened.

diff --git a/libarchive/archive_write_open_filename.c b/libarchive/archive_write_open_filename.c
index 196b770e8e834951b1d3776306ca25707f26680d..66e0dfee9f3d1dc22e24e90ef76c99226126d174 100644 (file)
--- a/libarchive/archive_write_open_filename.c
+++ b/libarchive/archive_write_open_filename.c
@@ -243,7 +243,10 @@ file_close(struct archive *a, void *client_data)
        struct write_file_data  *mine = (struct write_file_data *)client_data;
 
        (void)a; /* UNUSED */
-       close(mine->fd);
+
+       if (mine->fd >= 0)
+               close(mine->fd);
+
        archive_mstring_clean(&mine->filename);
        free(mine);
        return (ARCHIVE_OK);