Fix the first form multi-part item is not a "file type part" problem in "ParseUpload()"

go/storage/needle.go

@@ -60,11 +60,20 @@ func ParseUpload(r *http.Request) (fileName string, data []byte, mimeType string
 		return
 	}
 	part, fe := form.NextPart()
+	for {
 		if fe != nil {
 			glog.V(0).Infoln("Reading Multi part [ERROR]", fe)
 			e = fe
 			return
 		}
+
+		if part.FileName() != "" {
+			break //found the first <file type> multi-part
+		}
+
+		part, fe = form.NextPart()
+	}
+
 	fileName = part.FileName()
 	if fileName != "" {
 		fileName = path.Base(fileName)