s4 dsdb/repl_meta_data: allocate new extended DNs during ADD on a better context
Lower down in this function new_values is assigned over el->values and is
filled in with the values of all the parsed DNs. Therefore it is the natural
talloc parent.
This will allow el->values to be allocated on tmp_ctx in the next commit for
a working area during the function call.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
(cherry picked from commit
4aa9924310287ff3b36618496fa6c707c615ad4c)