Join conditions for move sorting heuristics

closes https://github.com/official-stockfish/Stockfish/pull/5078

No functional change.

src/search.cpp

@@ -607,9 +607,7 @@ Value Search::Worker::search(
         && (tte->bound() & (ttValue >= beta ? BOUND_LOWER : BOUND_UPPER)))
     {
         // If ttMove is quiet, update move sorting heuristics on TT hit (~2 Elo)
-        if (ttMove)
-        {
-            if (ttValue >= beta)
+        if (ttMove && ttValue >= beta)
         {
             // Bonus for a quiet ttMove that fails high (~2 Elo)
             if (!ttCapture)
@@ -621,7 +619,6 @@ Value Search::Worker::search(
                 update_continuation_histories(ss - 1, pos.piece_on(prevSq), prevSq,
                                               -stat_malus(depth + 1));
         }
-        }
 
         // Partial workaround for the graph history interaction problem
         // For high rule50 counts don't produce transposition table cutoffs.