fixed wrong return type

[SVN r69583]

include/boost/fusion/algorithm/auxiliary/copy.hpp

@@ -43,7 +43,7 @@ namespace boost { namespace fusion
             }
 
             template <typename I1, typename I2>
-            static bool
+            static void
             call(I1 const& src, I2 const& dest)
             {
                 typename result_of::equal_to<I1, end1_type>::type eq;