Assign seps variable of Lang.format before using it

issue9585
review306331002

trytond/ir/lang.py

@@ -452,6 +452,7 @@ class Lang(DeactivableMixin, ModelSQL, ModelView):
             if seps:
                 formatted = _strip_padding(formatted, seps)
         elif percent[-1] in 'diu':
+            seps = 0
             if grouping:
                 formatted, seps = self._group(formatted, monetary=monetary)
             if seps: