hpcc-systems/HPCC-Platform — pull request #2479 by ghalliday (2012-06-06 10:24:20+00:00)
Title: Fix crash comparing varunicode constants

Add protection in the runtime function, and match the default collation
to the code in makeUnicodeType()

Fixes bugzilla issue 104762

Signed-off-by: Gavin Halliday