inconsistent type handling with complex types

[davidnich]

ex:

david@greybeard:~/src/qore/git/qore/src$ qore -nX 'hash h = map {$1: True}, (auto x = ())'
<EMPTY HASH>
david@greybeard:~/src/qore/git/qore/src$ qore -nX 'hash<string, bool> h = map {$1: True}, (auto x = ())'
unhandled QORE System exception thrown in TID 1 at 2019-01-23 10:41:28.056761 Wed +01:00 (CET) at <command-line>:1 (Qore builtin code)
PARSE-TYPE-ERROR: lvalue for assignment operator '=' expects hash<string, bool>, but right-hand side is hash<string, bool> or no value (NOTHING)