Initialise "sorted" variable in constructor of QUICK_SELECT. The variable is set to 1 in test_if_skip_sort_order if we decide to optimize "order by" by uinsg index_read.


mysql-test/r/ndb_index_ordered.result:
  Another test to check the use of "sorted" in combination with reset_bounds()
mysql-test/t/ndb_index_ordered.test:
  Another test to check the use of "sorted" in combination with reset_bounds()
sql/ha_ndbcluster.cc:
  Check that sorted is set to 0 or 1.
sql/opt_range.cc:
  Initialise the sorted variable to zero QUICK_SELECT constructor.