bug in the test case fixed

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

mysql-test/suite/binlog/r/binlog_killed.result

@@ -55,7 +55,7 @@ drop table t4;
 create table t4 (a int, b int) ENGINE=MyISAM /* for killing update and delete */;
 create function bug27563(n int) 
 RETURNS int(11)
-DETERMINISTIC
+NOT DETERMINISTIC
 begin
 if @b > 0 then
 select get_lock("a", 20)  into @a;

mysql-test/suite/binlog/t/binlog_killed.test

@@ -218,7 +218,7 @@ create table t4 (a int, b int) ENGINE=MyISAM /* for killing update and delete */
 delimiter |;
 create function bug27563(n int) 
 RETURNS int(11)
-DETERMINISTIC
+NOT DETERMINISTIC
 begin
   if @b > 0 then
      select get_lock("a", 20)  into @a;