[FIX] hr_payroll_account: Remove journal_id: False in context

If the wizard to generate payslip was launched without an ´active_id´ in the context.
A ´journal_id´ entry was set to False in the context later leading to a crash at payslip creation.
The crash happens because, at creation time, the journal_id of a ´hr.payslip´ is set to the journal_id
in the context if its present. Since this context entry is False and the journal_id field is required,
creation crashes.

addons/hr_payroll_account/wizard/hr_payroll_payslips_by_employees.py

@@ -8,7 +8,7 @@ class HrPayslipEmployees(models.TransientModel):
 
     @api.multi
     def compute_sheet(self):
-        journal_id = False
         if self.env.context.get('active_id'):
             journal_id = self.env['hr.payslip.run'].browse(self.env.context.get('active_id')).journal_id.id
-        return super(HrPayslipEmployees, self.with_context(journal_id=journal_id)).compute_sheet()
+            return super(HrPayslipEmployees, self.with_context(journal_id=journal_id)).compute_sheet()
+        return super(HrPayslipEmployees, self).compute_sheet()