RFR(xxs): 8186199: [windows] JNI_DestroyJavaVM not covered by SEH

[Thomas Stüfe]

Dear all,

please review this tiny fix:

Issue: https://bugs.openjdk.java.net/browse/JDK-8186199
webrev:
http://cr.openjdk.java.net/~stuefe/webrevs/8186199-destroyjavavm-no-seh-handler/webrev.00/webrev/

We miss __try{ } __except in JNI_DestroyJavaVM, so we run without signal
handler (well, SE handler) during the invocation of JNI_DestroyJavaVM.

Thanks, Thomas