Request for Review (xs) - 8077301: Optimized build is broken

[Jon Masamitsu]

https://bugs.openjdk.java.net/browse/JDK-8077301

The "optimized" target does not build.   A method is used in an assert
but is defined under #ifndef PRODUCT and should be defined under
#ifdef  ASSERT.

http://cr.openjdk.java.net/~jmasa/8077301/webrev.00/

I built optimized, fastdebug, and product successfully after
the fix.

Thanks.

Jon