Fixed #14750 -- ILPostalCodeField didn't handle all EMPTY_VALUES correctly. Also converted the Israeli localflavor testcases to use the new, less verbose format. Thanks to Idan Gazit.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14943 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/localflavor/il/forms.py

@@ -4,6 +4,7 @@ Israeli-specific form helpers
 import re
 
 from django.core.exceptions import ValidationError
+from django.core.validators import EMPTY_VALUES
 from django.forms.fields import RegexField, Field, EMPTY_VALUES
 from django.utils.checksums import luhn
 from django.utils.translation import ugettext_lazy as _
@@ -34,7 +35,7 @@ class ILPostalCodeField(RegexField):
         super(ILPostalCodeField, self).__init__(r'^\d{5}$', *args, **kwargs)
 
     def clean(self, value):
-        if value is not None:
+        if value not in EMPTY_VALUES:
             value = value.replace(" ", "")
         return super(ILPostalCodeField, self).clean(value)