RFR 8214840: runtime/NMT/MallocStressTest.java timed out

[Harold David Seigel]

Hi,

Please review this proposed fix for JDK-8214840.  It is unclear from the 
failure logs why test MallocStressTest.java timed out but adding 
volatile should help reduce the number of times it times out.

Open Webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8214840/webrev/index.html

JBS Bug:  https://bugs.openjdk.java.net/browse/JDK-8214840

The fix was tested by running the test 1000+ times.  No time out occurred.

Thanks, Harold