fix: handle Transfer-Encoding for make bucket

In case of make bucket, there is a chance of Transfer-Encoding is sent
where Content-Length is missing.  This patch fixes the problem by
checking whether Transfer-Encoding: chunked is set along with
Content-Length.

bucket-handlers.go

@@ -230,7 +230,7 @@ func (api CloudStorageAPI) PutBucketHandler(w http.ResponseWriter, req *http.Req
 	// if body of request is non-nil then check for validity of Content-Length
 	if req.Body != nil {
 		/// if Content-Length is unknown/missing, deny the request
-		if req.ContentLength == -1 {
+		if req.ContentLength == -1 && !contains(req.TransferEncoding, "chunked") {
 			writeErrorResponse(w, req, MissingContentLength, req.URL.Path)
 			return
 		}

utils.go

@@ -46,3 +46,13 @@ func isMaxObjectSize(size int64) bool {
 	}
 	return false
 }
+
+func contains(stringList []string, element string) bool {
+	for _, e := range stringList {
+		if e == element {
+			return true
+		}
+	}
+
+	return false
+}