Add condition to check if file is empty before uploading it to MongoDB

scripts/chip-job-save-result

@@ -12,7 +12,7 @@ parser.add_argument("-f", "--file", dest="file", required=True, help="Path to re
 parser.add_argument("-m", "--meta", dest="meta", required=True, help="Path to meta yaml file.")
 args = parser.parse_args()
 
-if os.path.isfile(args.file) and os.path.isfile(args.meta):
+if os.path.isfile(args.file) and os.path.isfile(args.meta) and os.path.getsize(args.file) > 0:
     mdb = chipathlon.db.MongoDB(args.host, args.username, args.password)
     with open(args.meta, "r") as rh:
         meta = yaml.load(rh)