[8u40] Request for approval: 8038422:CDS test failed: assert((size % os::vm_allocation_granularity()) == 0) failed when limiting SharedMiscDataSize

[Yumin Qi]

Hi, Please approve backport following bug fix from 9 to 8u40:

bug: https://bugs.openjdk.java.net/browse/JDK-8038422
webrev: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/385699caea74 
(import changeset).

This is a one line fix, clean to import from 9 to 8u40.

Thanks
Yumin