Window function regression failed due to bug5366.sql missed comparison

Build tests: 1.2.2-1 source

/root/columnstore/mariadb-columnstore-server
commit 6bd66f5df21c6a8aa638ca92051bb833f2a8479f
Author: david hill <david.hill@mariadb.com>
Date: Thu Nov 15 09:22:34 2018 -0600

update version
/root/columnstore/mariadb-columnstore-server/mariadb-columnstore-engine
commit 105f0ed4ad1d6d8875ee90e7b8d19ecb3d582750
Merge: 99f595b 6563f48
Author: Andrew Hutchings <andrew@linuxjedi.co.uk>
Date: Wed Nov 21 17:30:52 2018 +0000

Merge pull request #636 from drrtuy/MCOL-1786

MCOL-1786 Reduce the performance degradation caused by iequals.

Compare failed - working_tpch1_compareLogOnly/windowFunctions/bug5366.sql

The issue was identified when testing MCOL-1778