5910 libnisdb won't build with modern GCC

*** 17,26 ****
--- 17,27 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2015 Gary Mills
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #include <strings.h>
*** 1238,1248 ****
  __nis_table_mapping_t **
  selectTableMapping(__nis_table_mapping_t *t, db_query *q,
                          int wantWrite, int wantObj, char *dbId,
                          int *numMatches) {
          __nis_table_mapping_t   *r, *x, **tp;
!         int                     i, j, k, nm, numap;
          char                    *myself = "selectTableMapping";
  
          if (numMatches == 0)
                  numMatches = &nm;
  
--- 1239,1249 ----
  __nis_table_mapping_t **
  selectTableMapping(__nis_table_mapping_t *t, db_query *q,
                          int wantWrite, int wantObj, char *dbId,
                          int *numMatches) {
          __nis_table_mapping_t   *r, *x, **tp;
!         int                     i, nm, numap;
          char                    *myself = "selectTableMapping";
  
          if (numMatches == 0)
                  numMatches = &nm;
  
*** 1417,1428 ****
   * 't->objectDN->write'. Return an appropriate LDAP status code.
   */
  int
  objToLDAP(__nis_table_mapping_t *t, nis_object *o, entry_obj **ea, int numEa) {
          __nis_table_mapping_t   **tp;
-         XDR                     xdr;
-         char                    *objName;
          int                     stat, osize, n, numMatches = 0;
          void                    *buf;
          __nis_rule_value_t      *rv;
          __nis_value_t           *val;
          __nis_single_value_t    *sv;
--- 1418,1427 ----
*** 1543,1553 ****
   */
  int
  objFromLDAP(__nis_table_mapping_t *t, nis_object **obj,
                  entry_obj ***eaP, int *numEaP) {
          __nis_table_mapping_t   **tp;
-         XDR                     xdr;
          nis_object              *o;
          __nis_rule_value_t      *rv;
          __nis_ldap_search_t     *ls;
          char                    *attrs[2], *filter, **fc = 0;
          void                    *buf;
--- 1542,1551 ----