mysql-test/suite/binlog/r/binlog_killed.result:
  bug in the test case fixed: the function *must* be declared as
  NOT DETERMINISTIC because it has side effects (it waits on
  the get_lock() when invoked more than once).
  When declared DETERMINISTIC, MariaDB feels free to cache the result
  and shortcut the execution, which breaks the test logic
mysql-test/suite/binlog/t/binlog_killed.test:
  bug in the test case fixed: the function *must* be declared as
  NOT DETERMINISTIC because it has side effects (it waits on
  the get_lock() when invoked more than once).
  When declared DETERMINISTIC, MariaDB feels free to cache the result
  and shortcut the execution, which breaks the test logic