Don't over-allocate in http::basic_fields

include/boost/beast/http/fields.hpp

@@ -196,7 +196,7 @@ private:
 
     using rebind_type = typename
         beast::detail::allocator_traits<Allocator>::
-            template rebind_alloc<element>;
+            template rebind_alloc<align_type>;
 
     using alloc_traits =
         beast::detail::allocator_traits<rebind_type>;

include/boost/beast/http/impl/fields.hpp

@@ -990,8 +990,8 @@ delete_element(element& e)
         (sizeof(element) + e.off_ + e.len_ + 2 + sizeof(align_type) - 1) /
             sizeof(align_type);
     e.~element();
-    alloc_traits::deallocate(a, &e, n);
-        //reinterpret_cast<align_type*>(&e), n);
+    alloc_traits::deallocate(a,
+        reinterpret_cast<align_type*>(&e), n);
 }
 
 template<class Allocator>