Update json_spirit_writer_template.h

diff --git a/src/json/json_spirit_writer_template.h b/src/json/json_spirit_writer_template.h
index 18a3f20..8e7a168 100644 (file)
--- a/src/json/json_spirit_writer_template.h
+++ b/src/json/json_spirit_writer_template.h
@@ -73,6 +73,7 @@ namespace json_spirit
 
             if( add_esc_char( c, result ) ) continue;
 
+            // FIXME: This comparison is always true on some platforms
             const wint_t unsigned_c( ( c >= 0 ) ? c : 256 + c );
 
             if( iswprint( unsigned_c ) )