Mark variable as potentially unused

fixes CI when compiled with -Werror

closes https://github.com/official-stockfish/Stockfish/pull/4221

No functional change

diff --git a/src/position.cpp b/src/position.cpp
index 62e6e2387cb657a58976ce52a4faa9be16db1ff1..5befcaf2cfcbd311034db63fee2a9ce934879d50 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -129,7 +129,7 @@ void Position::init() {
   // Prepare the cuckoo tables
   std::memset(cuckoo, 0, sizeof(cuckoo));
   std::memset(cuckooMove, 0, sizeof(cuckooMove));
-  int count = 0;
+  [[maybe_unused]] int count = 0;
   for (Piece pc : Pieces)
       for (Square s1 = SQ_A1; s1 <= SQ_H8; ++s1)
           for (Square s2 = Square(s1 + 1); s2 <= SQ_H8; ++s2)