[9] RFR (XS): 8151137: [TESTBUG] UnsafeGetStableArrayElement.java still fails with "(assert failed: 0 != 0)"

[Vladimir Ivanov]

http://cr.openjdk.java.net/~vlivanov/8151137/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8151137

@requires vm.flavor != "client" doesn't work as expected.
So, the test is executed with Client VM.

The fix is to add a check in the test.

Best regards,
Vladimir Ivanov