[jdk17u] RFR: 8268927: Windows: link error: unresolved external symbol "int __cdecl convert_to_unicode(char const *,wchar_t * *)"

[Alex Kasko]

Clean backport of the follow-up fix to [JDK-8238649](https://bugs.openjdk.java.net/browse/JDK-8238649) (#204).

I am unable to reproduce the linking problem locally.

Additional testing:

 - [x] fastdebug tier1 on Windows 2016

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Commit messages:
 - Backport e84461072af9cdb2ee83f5c0747ea5881a0ae805

Changes: https://git.openjdk.java.net/jdk17u/pull/244/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=244&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268927
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/244.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/244/head:pull/244

PR: https://git.openjdk.java.net/jdk17u/pull/244