Fix king value in SEE

When SEE piece values changed in aaad48464b
of 9/12/2008 we forgot to update the value assigned in
case of captured king.

In that patch we changed the SEE piece values but without
proper testing. Probably it is a good idea to make some
tests with the old Glaurung values.

Bug spotted by Joona.

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

src/position.cpp

@@ -1594,7 +1594,7 @@ int Position::see(Square from, Square to) const {
       if (pt == KING && stmAttackers)
       {
           assert(n < 32);
-          swapList[n++] = 100;
+          swapList[n++] = QueenValueMidgame*10;
           break;
       }
   } while (stmAttackers);