[FIX] hr_recruitment: Initialize company_id correctly

Fix "UnboundLocalError: local variable 'company_id' referenced before assignment"

closes odoo/odoo#38135

Signed-off-by: Romain Libert (rli) <rli@odoo.com>

addons/hr_recruitment/models/hr_recruitment.py

@@ -229,6 +229,7 @@ class Applicant(models.Model):
     def _onchange_job_id_internal(self, job_id):
         department_id = False
         user_id = False
+        company_id = False
         stage_id = self.stage_id.id or self._context.get('default_stage_id')
         if job_id:
             job = self.env['hr.job'].browse(job_id)