Thread safety fixes.

*** 83,93 ****
          "%I:%M:%S %p"
  };
  
  struct locdata __posix_time_locdata = {
          .l_lname = "C",
-         .l_refcnt = (uint32_t)-1,
          .l_data = { &lc_time_posix }
  };
  
  struct locdata *
  __lc_time_load(const char *name)
--- 83,92 ----
*** 104,114 ****
  
          ret = __part_load_locale(name, (char **)&ldata->l_data[1],
              "LC_TIME", LCTIME_SIZE, LCTIME_SIZE, (const char **)ltime);
  
          if (ret != _LDP_LOADED) {
!                 __locdata_release(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
  
          return (ldata);
--- 103,113 ----
  
          ret = __part_load_locale(name, (char **)&ldata->l_data[1],
              "LC_TIME", LCTIME_SIZE, LCTIME_SIZE, (const char **)ltime);
  
          if (ret != _LDP_LOADED) {
!                 __locdata_free(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
  
          return (ldata);