Small cleanups

https://github.com/official-stockfish/Stockfish/pull/2584

No functional change.

src/uci.cpp

@@ -115,7 +115,7 @@ namespace {
     limits.startTime = now(); // As early as possible!
 
     while (is >> token)
-        if (token == "searchmoves")
+        if (token == "searchmoves") // Needs to be the last command on the line
             while (is >> token)
                 limits.searchmoves.push_back(UCI::to_move(pos, token));