Fixed warning

src/repo/mod.rs

@@ -70,7 +70,7 @@ pub mod contact {
                             None
                         }
                     },
-                    phone_number: phone_number,
+                    phone_number,
                     user_id: Some(user_id),
                 })
             }
@@ -109,7 +109,7 @@ pub mod contact {
                     firstname: Some(firstname),
                     lastname: Some(lastname),
                     nickname: Some(nickname),
-                    phone_number: phone_number,
+                    phone_number,
                     user_id: Some(user_id),
                 })
             }