[FIX] l10n_in_edi: prevent traceback when give invalid zip code

Before this commit
Previously, there was a bug that caused an error when a zip code containing
any character was entered.

After this commit
This bug has been fixed now.

task id- 3441139

closes odoo/odoo#130942

X-original-commit: 8deeabdbfbee20289d79151fa2821ce04585d0bd
Signed-off-by: de Wouters de Bouchout Jean-Benoît (jbw) <jbw@odoo.com>
Signed-off-by: Zeel Patel (zepa) <zepa@odoo.com>

addons/l10n_in_edi/models/account_edi_format.py

@@ -255,10 +255,11 @@ class AccountEdiFormat(models.Model):
             if is_overseas is true then pin is 999999 and GSTIN(vat) is URP and Stcd is .
             if pos_state_id is passed then we use set POS
         """
+        zip_digits = self._l10n_in_edi_extract_digits(partner.zip)
         partner_details = {
             "Addr1": partner.street or "",
             "Loc": partner.city or "",
-            "Pin": int(self._l10n_in_edi_extract_digits(partner.zip)),
+            "Pin": zip_digits and int(zip_digits) or "",
             "Stcd": partner.state_id.l10n_in_tin or "",
         }
         if partner.street2: