inet: Remove strdupa from nrl_domainname()

We can use the already in place scratch_buffer.

Checked on x86_64-linux-gnu.

Reviewed-by: DJ Delorie <dj@redhat.com>

diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c
index 5965912c9e74cd122f689076d6295a2c04cdd627..d3387dd16a1f0bf0155ffff5d74c3aa175c816b0 100644 (file)
--- a/inet/getnameinfo.c
+++ b/inet/getnameinfo.c
@@ -118,15 +118,15 @@ nrl_domainname_core (struct scratch_buffer *tmpbuf)
       else
        {
          /* We need to preserve the hostname.  */
-         const char *hstname = strdupa (tmpbuf->data);
-         while (__gethostbyname_r (hstname, &th,
-                                   tmpbuf->data,
-                                   tmpbuf->length,
+         size_t hstnamelen = strlen (tmpbuf->data) + 1;
+         while (__gethostbyname_r (tmpbuf->data, &th,
+                                   tmpbuf->data + hstnamelen,
+                                   tmpbuf->length - hstnamelen,
                                    &h, &herror))
            {
              if (herror == NETDB_INTERNAL && errno == ERANGE)
                {
-                 if (!scratch_buffer_grow (tmpbuf))
+                 if (!scratch_buffer_grow_preserve (tmpbuf))
                    return;
                }
              else