[Bug 51911] New: vbscript does not handle strings in if clauses

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51911

Bug ID: 51911
           Summary: vbscript does not handle strings in if clauses
           Product: Wine
           Version: 6.19
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: vbscript
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

This is followup from https://bugs.winehq.org/show_bug.cgi?id=50758

Test with postgresql-9.3 installer from [1]. It runs a script during
installation 
similar to
https://github.com/three-plus-three/tpt_env_amd64/blob/master/postgresql/ins...
that reports non-critical error to main install, script itself terminates.

Reduced test case for this looks like this:

---
if "0" then 
end if
---

That leads to the following fixme, exactly that happens with the installer:

---
00f8:fixme:vbscript:stack_pop_bool unsupported for 000000000003C740 {VT_BSTR:
L"0"}
---

[1] https://www.enterprisedb.com/postgresql-tutorial-resources-training?cid=340