Memory leaks found in some tests run with --ps-protocol against a server built with the option -DWITH_PROTECT_STATEMENT_MEMROOT

The following tests fail in 10.5:

• main.derived_cond_pushdown
• main.intersect
• main.intersect_all
• main.table_value_constr
• main.subselect
• compat/oracle.table_value_constr
• main.subselect_no_exists_to_in
• main.set_operation
• main.set_operation_oracle
• main.subselect_no_mat
• main.subselect_no_opts
• main.subselect_no_scache
• main.subselect_no_semijoin
• main.except_all