fixup! CP-50537: Propagate originator as a http request header

python3/examples/XenAPI/XenAPI.py

@@ -118,6 +118,7 @@ def with_tracecontext(self):
             for k, v in headers.items():
                 self.add_extra_header(k, v)
     def make_connection(self, host):
+        self._extra_headers = []
         self.with_tracecontext()
 
         originator_k = "ORIGINATOR"