Fix strongly_protected tautology

[TheRealGioviok]

Passed nonregr STC:

Test  | evaltautologyxd
Elo   | 1.92 +- 2.55 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=16MB
LLR   | 2.97 (-2.94, 2.94) [-3.00, 0.00]
Games | N: 25352 W: 6778 L: 6638 D: 11936
Penta | [383, 2961, 5797, 3203, 332]

https://ob.cwchess.org/test/1470/

Passed nonregr LTC:

Test  | evaltautologyxd
Elo   | 2.44 +- 2.61 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=64MB
LLR   | 2.95 (-2.94, 2.94) [-3.00, 0.00]
Games | N: 19648 W: 4930 L: 4792 D: 9926
Penta | [97, 2360, 4789, 2464, 114]

https://ob.cwchess.org/test/1472/

Bench: 14582377