LMR earlier for quiet moves (#683)

ELO   | 6.10 +- 3.85 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | 2.95 (-2.94, 2.94) [0.00, 3.00]
GAMES | N: 16232 W: 4374 L: 4089 D: 7769

ELO   | 2.38 +- 1.90 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=128MB
LLR   | 2.97 (-2.94, 2.94) [0.00, 3.00]
GAMES | N: 60800 W: 14660 L: 14244 D: 31896

Bench: 21253689

src/search.c

@@ -483,7 +483,7 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
 
         // Reduced depth zero-window search
         if (   depth > 2
-            && moveCount > 1 + pvNode + !ttMove + root
+            && moveCount > MAX(1, pvNode + !ttMove + root + !quiet)
             && thread->doPruning) {
 
             // Base reduction