Mark Haines ded01c3bf6 Fix `KeyError: 'msgtype'. Use .get`
Fixes a key error where the mailer tried to get the ``msgtype`` of an
event that was missing a ``msgtype``.

```
 File "synapse/push/mailer.py", line 264, in get_notif_vars
 File "synapse/push/mailer.py", line 285, in get_message_vars
 File ".../frozendict/__init__.py", line 10, in __getitem__
    return self.__dict[key]
    KeyError: 'msgtype'
```
2016-06-17 13:49:16 +01:00
..
2016-06-15 10:39:08 +01:00
2016-06-17 13:49:16 +01:00
2016-06-15 16:58:12 +01:00
2016-06-15 15:50:48 +01:00