Fixes the following:
```Traceback (most recent call last):
File "/opt/odoo-10.0/addons/report/controllers/main.py", line 100, in report_download
response = self.report_routes(reportname, converter='pdf', **dict(data))
File "/opt/odoo-10.0/src/odoo-10.0/odoo/http.py", line 504, in response_wrap
response = f(*args, **kw)
File "/opt/odoo-10.0/src/odoo-10.0/addons/report/controllers/main.py", line 45, in report_routes
pdf = report_obj.with_context(context).get_pdf(docids, reportname, data=data)
File "/opt/odoo-10.0/src/oca/mis_builder/report/mis_report_instance_qweb.py", line 23, in get_pdf
return super(Report, self.with_context(ctx)).get_pdf(
UnboundLocalError: local variable 'ctx' referenced before assignment
```
Andrea Stirpe
6bfb5839e9
