Fix an Intel warning in san.cpp

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/san.cpp b/src/san.cpp
index efdf177..a0ff4cd 100644 (file)
--- a/src/san.cpp
+++ b/src/san.cpp
@@ -172,7 +172,7 @@ Move move_from_san(const Position& pos, const std::string& movestr) {
   for (size_t i = 0; i < movestr.length(); i++)
   {
       char type, c = movestr[i];
-      if (pieceLetters.find(c) != -1)
+      if (pieceLetters.find(c) != std::string::npos)
           type = 'P';
       else if (c >= 'a' && c <= 'h')
           type = 'F';