Consistently use visit_content_seq and visit_content_map when deseria…

…lize enums

Helper methods visit_content_[seq|map] does the same as [Seq|Map]Deserializer::deserialize_any
and used everywhere except here. Reuse them for consistency

serde/src/private/de.rs

@@ -1624,9 +1624,7 @@ mod content {
             V: de::Visitor<'de>,
         {
             match self.value {
-                Some(Content::Seq(v)) => {
-                    de::Deserializer::deserialize_any(SeqDeserializer::new(v.into_iter()), visitor)
-                }
+                Some(Content::Seq(v)) => visit_content_seq(v, visitor),
                 Some(other) => Err(de::Error::invalid_type(
                     other.unexpected(),
                     &"tuple variant",
@@ -1647,12 +1645,8 @@ mod content {
             V: de::Visitor<'de>,
         {
             match self.value {
-                Some(Content::Map(v)) => {
-                    de::Deserializer::deserialize_any(MapDeserializer::new(v.into_iter()), visitor)
-                }
-                Some(Content::Seq(v)) => {
-                    de::Deserializer::deserialize_any(SeqDeserializer::new(v.into_iter()), visitor)
-                }
+                Some(Content::Map(v)) => visit_content_map(v, visitor),
+                Some(Content::Seq(v)) => visit_content_seq(v, visitor),
                 Some(other) => Err(de::Error::invalid_type(
                     other.unexpected(),
                     &"struct variant",