[FIX] mis_builder: in some cases with other report, ids isn't initialized

mis_builder/report/report_mis_report_instance.py

@@ -55,6 +55,7 @@ class Report(models.Model):
     @api.v7
     def get_pdf(self, cr, uid, ids, report_name, html=None, data=None,
                 context=None):
+        if ids:
             report = self._get_report_from_name(cr, uid, report_name)
             obj = self.pool[report.model].browse(cr, uid, ids,
                                                  context=context)[0]