Request for reviews (S): 6679854: assert in escape.cpp:397

[Vladimir Kozlov]

http://webrev.invokedynamic.info/kvn/6679854/index.html

Fixed 6679854: assert in escape.cpp:397

Problem:
The assert misses the case CastX2P 'base' for an unsafe field reference.

Solution:
Add the check for CastX2P into the assert.

I also fixed the reported this file gcc build problem.

Reviewed by:
Fix verified (y/n): y, failed test case.

Other testing:
JPRT