Make operator<< to return void

[stockfish] / src / ucioption.h

diff --git a/src/ucioption.h b/src/ucioption.h
index 75e4ac1301e6d85e2b7daf8bb451bfeeb670a20e..19ca14fdd5746d74e85cecca358b7f6f47537761 100644 (file)
--- a/src/ucioption.h
+++ b/src/ucioption.h
@@ -47,7 +47,7 @@ public:
   Option(int v, int min, int max, OnChange = NULL);
 
   Option& operator=(const std::string& v);
-  Option& operator<<(const Option& o);
+  void operator<<(const Option& o);
   operator int() const;
   operator std::string() const;