(xreadlink): Preserve errno around `free' during failure.

diff --git a/lib/xreadlink.c b/lib/xreadlink.c
index 881b794..a018333 100644 (file)
--- a/lib/xreadlink.c
+++ b/lib/xreadlink.c
@@ -58,7 +58,9 @@ xreadlink (char const *filename, size_t *link_length_arg)
       link_length = readlink (filename, buffer, buf_size);
       if (link_length < 0)
        {
+         int saved_errno = errno;
          free (buffer);
+         errno = saved_errno;
          return NULL;
        }
       if (link_length < buf_size)