Bug#908578: reportbug: crash on requesting madison

[Горбешко Богдан <bodqhrohro@gmail.com>]

Package: reportbug
Version: 7.5.0
Severity: normal

Dear Maintainer,

the reportbug package crashes on querying madison. So I had to compose 
this e-mail manually. Steps to reproduce:

* Start the reportbug master, proceed to the second step.
* Type in the package name, like `xfce4-panel` or `reportbug`, click on 
the needed package name in the list, proceed to the next step.
* The progressbar is shown for a while and then reportbug crashes:

```
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/reportbug/ui/gtk2_ui.py", line 
1049, in sync_pre_operation
    http_proxy=http_proxy, archived=archived, source=source)
  File "/usr/lib/python3/dist-packages/reportbug/debbugs.py", line 
1072, in get_reports
    bugs = debianbts.get_bugs(pkg_filter, package)
  File "/usr/lib/python3/dist-packages/debianbts/debianbts.py", line 
410, in get_bugs
    reply = soap_client.call('get_bugs', method_el)
  File "/usr/lib/python3/dist-packages/pysimplesoap/client.py", line 
260, in call
    self.xml_response = self.send(method, self.xml_request)
  File "/usr/lib/python3/dist-packages/pysimplesoap/client.py", line 
313, in send
    location, http_method, body=xml, headers=headers)
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 
1395, in request
    self.disable_ssl_certificate_validation)
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 978, 
in __init__
    timeout=timeout, context=context)
TypeError: fixer() missing 1 required positional argument: 'check_hostname'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/reportbug", line 2266, in <module>
    main()
  File "/usr/bin/reportbug", line 1109, in main
    return iface.user_interface()
  File "/usr/bin/reportbug", line 1722, in user_interface
    latest_first=self.options.latest_first)
  File "/usr/lib/python3/dist-packages/reportbug/ui/gtk2_ui.py", line 
1763, in func
    args, kwargs = op.sync_pre_operation(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/reportbug/ui/gtk2_ui.py", line 
1051, in sync_pre_operation
    error_dialog("Unable to connect to %s BTS." % sysinfo['name'])
  File "/usr/lib/python3/dist-packages/reportbug/ui/gtk2_ui.py", line 
137, in error_dialog
    _assert_context(ui_context)
  File "/usr/lib/python3/dist-packages/reportbug/ui/gtk2_ui.py", line 
92, in _assert_context
    (_describe_context(really), _describe_context(expected)))
AssertionError: Function should be called in <MainContext of reportbug 
thread> but was called in <MainContext of UI thread>
```




-- System Information:
Debian Release: buster/sid
  APT prefers oldoldstable-updates
  APT policy: (500, 'oldoldstable-updates'), (500, 'oldoldstable 
Architectures: i386

Kernel: Linux 4.17.0-3-amd64 (SMP w/2 CPU cores)
Locale: LANG=ru_UA.UTF-8, LC_CTYPE=ru_UA.UTF-8 (charmap=UTF-8), 
LANGUAGE=ru_UA:ru (charmap=UTF-8)