* subversion/libsvn_subr/config.c
  (svn_config_addsection): Return result by value.
  (svn_config_set, svn_config_dup): Update callers to
   svn_config_addsection().


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1464482 13f79535-47bb-0310-9956-ffa450edef68