Simplify previous commit by using the full bonus for LMR-triggered stats update.
STC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 23684 W: 5255 L: 5137 D: 13292
http://tests.stockfishchess.org/tests/view/
5d2826660ebc5925cf0d5180
LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 16245 W: 2832 L: 2704 D: 10709
http://tests.stockfishchess.org/tests/view/
5d282e9c0ebc5925cf0d529b
Closes https://github.com/official-stockfish/Stockfish/pull/2236
Bench:
3361902