Avoid some warnings when compiling the test with Visual C++.

[SVN r40004]

hash/test/hash_sequence_test.hpp

@@ -9,6 +9,11 @@
 
 #include <boost/preprocessor/cat.hpp>
 
+#if defined(BOOST_MSVC)
+#pragma warning(push)
+#pragma warning(disable:4245) // signed/unsigned mismatch
+#endif
+
 namespace BOOST_PP_CAT(CONTAINER_TYPE, _tests)
 {
     template <class T>
@@ -63,5 +68,9 @@ namespace BOOST_PP_CAT(CONTAINER_TYPE, _tests)
     }
 }
 
+#if defined(BOOST_MSVC)
+#pragma warning(pop)
+#endif
+
 #undef CONTAINER_TYPE
 #endif