[FIX] contract: Proper cron execution on multi-company

The invoice generation was only done for the last company found, as it
was called outside the loop.

contract/__manifest__.py

@@ -9,7 +9,7 @@
 
 {
     'name': 'Contracts Management - Recurring',
-    'version': '10.0.4.3.1',
+    'version': '10.0.4.3.2',
     'category': 'Contract Management',
     'license': 'AGPL-3',
     'author': "OpenERP SA, "

contract/models/account_analytic_account.py

@@ -365,7 +365,8 @@ class AccountAnalyticAccount(models.Model):
                 ('date_end', '=', False),
                 ('date_end', '>=', cutoffdate),
             ])
-        return contracts.recurring_create_invoice(limit)
+            contracts.recurring_create_invoice(limit)
+        return True
 
     @api.multi
     def action_contract_send(self):