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.
   */
  
  
*** 2088,2098 ****
   */
  __nis_value_t **
  matchMappingItem(__nis_mapping_format_t *f, __nis_value_t *inVal,
                  int *numVals, char *sepset, char **outstr) {
          __nis_value_t           **v = 0;
!         int                     i, n, ni, numItems, nf, nv = 0;
          char                    *str, *valstr;
          __nis_mapping_format_t  *ftmp;
          char                    *myself = "matchMappingItem";
  
          if (f == 0 ||
--- 2089,2099 ----
   */
  __nis_value_t **
  matchMappingItem(__nis_mapping_format_t *f, __nis_value_t *inVal,
                  int *numVals, char *sepset, char **outstr) {
          __nis_value_t           **v = 0;
!         int                     i, n, ni, numItems, nf;
          char                    *str, *valstr;
          __nis_mapping_format_t  *ftmp;
          char                    *myself = "matchMappingItem";
  
          if (f == 0 ||