Thread safety fixes.

*** 71,81 ****
          empty           /* crncystr */
  };
  
  struct locdata __posix_monetary_locdata = {
          .l_lname = "C",
-         .l_refcnt = (uint32_t)-1,
          .l_data = { &lc_monetary_posix }
  };
  
  static char
  cnv(const char *str)
--- 71,80 ----
*** 103,113 ****
          ret = __part_load_locale(name, (char **)&ldata->l_data[1],
              "LC_MONETARY", LCMONETARY_SIZE_FULL, LCMONETARY_SIZE_MIN,
              (const char **)lmon);
  
          if (ret != _LDP_LOADED) {
!                 __locdata_release(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
  
          /* special storage for currency string */
--- 102,112 ----
          ret = __part_load_locale(name, (char **)&ldata->l_data[1],
              "LC_MONETARY", LCMONETARY_SIZE_FULL, LCMONETARY_SIZE_MIN,
              (const char **)lmon);
  
          if (ret != _LDP_LOADED) {
!                 __locdata_free(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
  
          /* special storage for currency string */