Fixed clippy problem

Author: Qubasa

src/wire/dhcpv4.rs

@@ -346,7 +346,7 @@ impl<'a> DhcpOption<'a> {
             &DhcpOption::ClientNetworkInterfaceId(_) => 5,
             &DhcpOption::VendorClassId(list) => 2 + list.len(),
             &DhcpOption::Other { data, .. } => {
-                2 + data.len();
+                2 + data.len()
             }
         }
     }