Thread safety fixes.

*** 45,62 ****
          numempty        /* grouping */
  };
  
  struct locdata __posix_numeric_locdata = {
          .l_lname = "C",
-         .l_refcnt = (uint32_t)-1,
          .l_data = { &lc_numeric_posix }
  };
  
  
  /*
!  * Return the locale's numeric locdata structure, places a hold on it,
!  * which the caller must release.
   */
  struct locdata *
  __lc_numeric_load(const char *name)
  {
          struct locdata *ldata;
--- 45,60 ----
          numempty        /* grouping */
  };
  
  struct locdata __posix_numeric_locdata = {
          .l_lname = "C",
          .l_data = { &lc_numeric_posix }
  };
  
  
  /*
!  * Return the locale's numeric locdata structure.
   */
  struct locdata *
  __lc_numeric_load(const char *name)
  {
          struct locdata *ldata;
*** 71,81 ****
  
          ret = __part_load_locale(name, (char **)&ldata->l_data[1],
              "LC_NUMERIC", LCNUMERIC_SIZE, LCNUMERIC_SIZE, (const char **)lnum);
  
          if (ret != _LDP_LOADED) {
!                 __locdata_release(ldata);
                  return (NULL);
          }
  
          /* Can't be empty according to C99 */
          if (*lnum->decimal_point == '\0')
--- 69,79 ----
  
          ret = __part_load_locale(name, (char **)&ldata->l_data[1],
              "LC_NUMERIC", LCNUMERIC_SIZE, LCNUMERIC_SIZE, (const char **)lnum);
  
          if (ret != _LDP_LOADED) {
!                 __locdata_free(ldata);
                  return (NULL);
          }
  
          /* Can't be empty according to C99 */
          if (*lnum->decimal_point == '\0')