<i18n dev> RFR: 8280474: Garbage value passed to getLocaleInfoWrapper in HostLocaleProviderAdapter_md

[Daniel Jeliński]

Reported by clang-tidy. Verified manually by running

        Calendar c = Calendar.getInstance();
        System.out.println (c.getDisplayNames(Calendar.MONTH, Calendar.SHORT_STANDALONE, Locale.getDefault()));

with `-Djava.locale.providers=HOST`

Without the fix the WINAPI functions fail, and [this block](https://github.com/openjdk/jdk/blame/739769c8fc4b496f08a92225a12d07414537b6c0/src/java.base/windows/native/libjava/HostLocaleProviderAdapter_md.c#L857) is never entered. With the fix this block is entered and sensible values are stored in the returned array.

No test because the observable effect with and without the fix was the same; apparently there's a fallback to another provider that works.

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Commit messages:
 - Update copyright year
 - make sure isGenitive is initialized before use

Changes: https://git.openjdk.java.net/jdk/pull/7184/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7184&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280474
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7184.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7184/head:pull/7184

PR: https://git.openjdk.java.net/jdk/pull/7184