An uninitialized function Result of a managed type needs special handling.
When passing it as a var parameter a warning need to be emitted, since a user
may expect Result to be empty (nil) by default as it happens with local vars
of a managed type. But this is not true for Result and may lead to serious issues.
The only exception is SetLength(Result, ?) for a string Result. A user always
expects undefined contents of the string after calling SetLength(). In such
case a hint need to be emitted.
+ Tests for this.
git-svn-id: trunk@40216 -