5918 Memory leak when zfs_destroy_snaps_nvl fails

*** 3413,3422 ****
--- 3413,3423 ----
                          ret = zfs_standard_error(hdl, errno, errbuf);
                          break;
                  }
          }
  
+         nvlist_free(errlist);
          return (ret);
  }
  
  /*
   * Clones the given dataset.  The target must be of the same type as the source.