Thread safety fixes.

*** 60,70 ****
          .lc_is_posix = 1,
  };
  
  struct locdata __posix_collate_locdata = {
          .l_lname = "C",
-         .l_refcnt = (uint32_t)-1,
          .l_data = { &lc_collate_posix }
  };
  
  
  struct locdata *
--- 60,69 ----