nsbparse2: Nested function calls are broken...-ish

[krofna]

chapter main
{
    func(Message(UNK150()), Message());
    UNK150(Message(UNK131()), UNK150);
}

00000 ChapterDeclaration(chapter.main);
00001 ScopeBegin();
00002 UNK150();
00003 Message(@);
00004 Message();
00005 CallFunction(func, @, @);
00006 ClearParams();
00007 UNK131();
00008 Message(@);
00009 Literal(STRING, UNK150);
00010 UNK150(@, UNK150);
00011 ClearParams();
00012 ScopeEnd();
00013 EndChapter();

chapter main
{
    func(Message(@), Message());
    UNK150(@, UNK150);
}