Aspiration: widen slower
STC:
LLR: -2.95 (-2.94,2.94) [0.00,4.00]
Total: 182323 W: 30664 L: 30234 D: 121425

LTC:
LLR: 3.51 (-2.94,2.94) [0.00,4.00]
Total: 59841 W: 8345 L: 8006 D: 43490

bench 7962536
Small code style reformatting

No functional change.
Fix a warning with MSVC 2010

Warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data

No functional change.
Document Threat[] indices
From Marco's repo.

No functional change.