change Sticker Download position to folow current rules

message.go

@@ -306,13 +306,6 @@ func (m *ImageMessage) Download() ([]byte, error) {
 	return Download(m.url, m.mediaKey, MediaImage, int(m.fileLength))
 }
 
-/*
-Download is the function to retrieve Sticker media data. The media gets downloaded, validated and returned.
-*/
-func (m *StickerMessage) Download() ([]byte, error) {
-	return Download(m.url, m.mediaKey, MediaImage, int(m.fileLength))
-}
-
 /*
 VideoMessage represents a video message. Unexported fields are needed for media up/downloading and media validation.
 Provide a io.Reader as Content for message sending.
@@ -663,6 +656,13 @@ func getStickerMessage(msg *proto.WebMessageInfo) StickerMessage {
 	return StickerMessage
 }
 
+/*
+Download is the function to retrieve Sticker media data. The media gets downloaded, validated and returned.
+*/
+func (m *StickerMessage) Download() ([]byte, error) {
+	return Download(m.url, m.mediaKey, MediaImage, int(m.fileLength))
+}
+
 func ParseProtoMessage(msg *proto.WebMessageInfo) interface{} {
 	switch {