Switch execution order in search: do move pruning before extension detection.
STC:
LLR: 2.96 (-2.94,2.94) [-1.50,4.50]
Total: 5762 W: 1307 L: 1181 D: 3274
http://tests.stockfishchess.org/tests/view/
5dcc56e90ebc59025bcbb833
LTC:
LLR: 2.96 (-2.94,2.94) [0.00,3.50]
Total: 72956 W: 11959 L: 11585 D: 49412
http://tests.stockfishchess.org/tests/view/
5dcc62840ebc59025bcbb96f
Closes https://github.com/official-stockfish/Stockfish/pull/2413
Bench:
4532366