move back the section

weed/storage/needle.go

@@ -120,6 +120,9 @@ func ParseUpload(r *http.Request) (
 	}
 
 	isChunkedFile, _ = strconv.ParseBool(r.FormValue("cm"))
+
+	if !isChunkedFile {
+
 		dotIndex := strings.LastIndex(fileName, ".")
 		ext, mtype := "", ""
 		if dotIndex > 0 {
@@ -132,7 +135,6 @@ func ParseUpload(r *http.Request) (
 			mtype = contentType
 		}
 
-	if !isChunkedFile {
 		if part.Header.Get("Content-Encoding") == "gzip" {
 			isGzipped = true
 		} else if operation.IsGzippable(ext, mtype) {