RFR(XS): 8252773: [TESTBUG] serviceability/jvmti/GetObjectSizeOverflow fails due to OOM conditions

[Christoph Göttschkes]

Hi,

please review the following patch for the GetObjectSizeOverflow test.
Bug: https://bugs.openjdk.java.net/browse/JDK-8252773
Webrev: https://cr.openjdk.java.net/~cgo/8252773/webrev.00

The test case already handles out of memory conditions, but not if the 
whole JVM crashes because of it.

Thanks,
Christoph