[FIX] l10n_be_edi: only add the pdf to the xml if it exists

Before this commit, in some cases the attachment of the Belgian EDI might not exist any longer when printing the pdf, which caused a crash when trying to embed it into the xml.

closes odoo/odoo#66588

Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>

addons/l10n_be_edi/models/ir_actions_report.py

@@ -17,9 +17,8 @@ class IrActionsReport(models.Model):
         result = super()._postprocess_pdf_report(record, buffer)
 
         if record._name == 'account.move':
-            edi_document = record.edi_document_ids.filtered(lambda d: d.edi_format_id.code == 'efff_1')
-            if edi_document:
-                edi_attachment = edi_document[0].attachment_id
+            edi_attachment = record.edi_document_ids.filtered(lambda d: d.edi_format_id.code == 'efff_1').attachment_id
+            if edi_attachment:
                 old_xml = base64.b64decode(edi_attachment.with_context(bin_size=False).datas, validate=True)
                 tree = etree.fromstring(old_xml)
                 document_currency_code_elements = tree.xpath("//*[local-name()='DocumentCurrencyCode']")