Thread safety fixes.

*** 64,74 ****
          .lc_ctype_mask = _DefaultRuneLocale.__runetype,
  };
  
  struct locdata __posix_ctype_locdata = {
          .l_lname = "C",
-         .l_refcnt = (uint32_t)-1,
          .l_data = { &lc_ctype_posix, &_DefaultRuneLocale }
  };
  
  
  /*
--- 64,73 ----
*** 112,122 ****
  
          (void) snprintf(path, sizeof (path), "%s/%s/LC_CTYPE/LCL_DATA",
              _PathLocale, name);
  
          if ((rl = _Read_RuneMagi(path)) == NULL) {
!                 __locdata_release(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
          ldata->l_data[1] = rl;
  
--- 111,121 ----
  
          (void) snprintf(path, sizeof (path), "%s/%s/LC_CTYPE/LCL_DATA",
              _PathLocale, name);
  
          if ((rl = _Read_RuneMagi(path)) == NULL) {
!                 __locdata_free(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
          ldata->l_data[1] = rl;
  
*** 137,147 ****
                          encodings[i].e_init(lct);
                          break;
                  }
          }
          if (encodings[i].e_name == NULL) {
!                 __locdata_release(ldata);
                  errno = EINVAL;
                  return (NULL);
          }
  
  
--- 136,146 ----
                          encodings[i].e_init(lct);
                          break;
                  }
          }
          if (encodings[i].e_name == NULL) {
!                 __locdata_free(ldata);
                  errno = EINVAL;
                  return (NULL);
          }