[12.0][FIX] agreement_legal: Error when mass action on list view

agreement_legal 12.0.2.0.1

agreement_legal/__manifest__.py

@@ -11,7 +11,7 @@
     "website": "https://github.com/OCA/contract",
     "category": "Partner",
     "license": "AGPL-3",
-    "version": "12.0.2.0.0",
+    "version": "12.0.2.0.1",
     "depends": ["contacts", "agreement", "product"],
     "data": [
         "data/ir_sequence.xml",

agreement_legal/models/agreement.py

@@ -368,5 +368,8 @@ class Agreement(models.Model):
     # Increments the revision on each save action
     @api.multi
     def write(self, vals):
-        vals["revision"] = self.revision + 1
-        return super(Agreement, self).write(vals)
+        res = True
+        for rec in self:
+            vals["revision"] = rec.revision + 1
+            res = super(Agreement, rec).write(vals)
+        return res