approach 4

Author: grisumbras

Diff for: include/boost/json/detail/digest.hpp

@@ -44,12 +44,9 @@ digest(
         hash = (batch ^ hash) * prime;
     }
 
-    if(n)
-    {
-        std::size_t batch = 0;
-        std::memcpy(&batch, s, n);
-        hash = (batch ^ hash) * prime;
-    }
+    std::size_t batch = 0;
+    std::memcpy(&batch, s, n);
+    hash = (batch ^ hash) * prime;
 
     return hash;
 }