Use Serializer::collect_seq in serialize impls (serenity-rs#2744)

src/model/utils.rs

@@ -377,13 +377,7 @@ pub fn serialize_map_values<K, S: Serializer, V: Serialize>(
     map: &HashMap<K, V>,
     serializer: S,
 ) -> StdResult<S::Ok, S::Error> {
-    let mut seq = serializer.serialize_seq(Some(map.len()))?;
-
-    for value in map.values() {
-        seq.serialize_element(&value)?;
-    }
-
-    seq.end()
+    serializer.collect_seq(map.values())
 }
 
 /// Deserializes a sequence and builds a `HashMap` with the key extraction function.