[range] Fixed a bug in istream_range() that prevented it from working with character types other than 'char' (refs #7407).

[SVN r84707]

include/boost/range/istream_range.hpp

@@ -27,8 +27,8 @@ namespace boost
         istream_range(std::basic_istream<Elem, Traits>& in)
         {
             return iterator_range<std::istream_iterator<Type, Elem, Traits> >(
-                std::istream_iterator<Type>(in),
-                std::istream_iterator<Type>());
+                std::istream_iterator<Type, Elem, Traits>(in),
+                std::istream_iterator<Type, Elem, Traits>());
         }
     } // namespace range
     using range::istream_range;