Re-fix square.h warning to avoid a compile error under MSVC

This fix adds ugliness to an already ugly previous fix...hopefully
it is the last one :-(

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

diff --git a/src/square.h b/src/square.h
index 5ebfcc39b96365e09aef8f25b2a11e421bdfb652..9683e930652e5f3bf3cd11a413ec3474c7b6690d 100644 (file)
--- a/src/square.h
+++ b/src/square.h
@@ -164,7 +164,7 @@ inline File file_from_char(char c) {
 }
 
 inline char file_to_char(File f) {
 }
 
 inline char file_to_char(File f) {

-  return char(f - FILE_A + 'a');
+  return char(f - FILE_A + int('a'));

 }
 
 inline Rank rank_from_char(char c) {
 }
 
 inline Rank rank_from_char(char c) {


@@ -172,7 +172,7 @@ inline Rank rank_from_char(char c) {
 }
 
 inline char rank_to_char(Rank r) {
 }
 
 inline char rank_to_char(Rank r) {

-  return char(r - RANK_1 + '1');
+  return char(r - RANK_1 + int('1'));

 }
 
 inline Square square_from_string(const std::string& str) {
 }
 
 inline Square square_from_string(const std::string& str) {