[FIX]: Corrected minor problems.

bzr revid: uco@tinyerp.com-20101213074049-c32m68722abkpola

addons/event/event.py

@@ -101,6 +101,8 @@ class event_event(osv.osv):
         @param context: A standard dictionary for contextual values
         @return: True
         """
+        if context is None:
+            context = {}
         res = False
         if type(ids) in (int, long,):
             ids = [ids]

addons/point_of_sale/point_of_sale.py

@@ -125,7 +125,7 @@ class pos_order(osv.osv):
         @return: Dictionary of values """
         res = {}
         val = None
-        for order in self.browse(cr, uid, ids, context=context):
+        for order in self.browse(cr, uid, ids):
             cr.execute("SELECT date_validation FROM pos_order WHERE id = %s", (order.id,))
             date_p = cr.fetchone()
             date_p = date_p and date_p[0] or None