echo_client: fix wrong variable error

Thanks mathieui

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

examples/echo_client.py

@@ -262,13 +262,13 @@ class EchoBot(ClientXMPP):
                         device_list.append(error.device)
             except (IqError, IqTimeout) as exn:
                 self.plain_reply(
-                    mto, mfrom,
+                    mto, mtype,
                     'An error occured while fetching information on a recipient.\n%r' % exn,
                 )
                 return None
             except Exception as exn:
                 await self.plain_reply(
-                    mto, mfrom,
+                    mto, mtype,
                     'An error occured while attempting to encrypt.\n%r' % exn,
                 )
                 raise