[IMP] hr_payroll: minor improvement in methods for parameter employee

bzr revid: mtr@mtr-20110505124959-062hns4ca03vltbu

addons/hr_payroll/hr_payroll.py

@@ -613,12 +613,12 @@ class hr_payslip(osv.osv):
         return self.onchange_employee_id(cr, uid, ids, date_from=date_from, date_to=date_to, employee_id=employee_id, contract_id=contract_id, context=context)
 
     def sum(self, cr, uid, code, from_date, to_date=None, employee=False, context=None):
+        if not employee:
+            return 0.0
         if context is None:
             context = {}
         if to_date is None:
             to_date = datetime.now().strftime('%Y-%m-%d')
-        if not employee:
-            return 0.0
         cr.execute("SELECT sum(pl.total) \
                     FROM hr_payslip as hp, hr_payslip_line as pl \
                     WHERE hp.employee_id = %s AND hp.state in ('confirm','done') \
@@ -651,12 +651,12 @@ class hr_payslip_input(osv.osv):
     }
     
     def sum(self, cr, uid, code, field, from_date, to_date=None, employee=False, context=None):
+        if not employee:
+            return 0.0
         if context is None:
             context = {}
         if to_date is None:
             to_date = datetime.now().strftime('%Y-%m-%d')
-        if not employee:
-            return 0.0
         result = 0.0
         cr.execute("SELECT pi.id \
                     FROM hr_payslip as hp, hr_payslip_input as pi \