fix a-b mailing errors

emencia/django/newsletter/mailer.py

@@ -262,9 +262,9 @@ class NewsLetterSender(object):
                            'UNIQUE_KEY': ''.join(sample(UNIQUE_KEY_CHAR_SET,
                                                         UNIQUE_KEY_LENGTH))})
         if self.newsletter.ab_testing and self.ab_state == Newsletter.A:
-            content = self.title_template.render(context)
+            title = self.title_template.render(context)
         elif self.newsletter.ab_testing and self.ab_state == Newsletter.B:
-                content = self.title_template2.render(context)
+                title = self.title_template2.render(context)
         else:
             title = self.title_template.render(context)
         return title
@@ -411,7 +411,8 @@ class NewsLetterSender(object):
             'contact': contact,
             'status': status,
             }
-        if self.newsletter.ab_testing and self.newsletter.ab_final_stage:
+        if self.newsletter.ab_testing:
+            if self.newsletter.ab_final_stage:
                 try:
                     contact = ContactMailingStatus.objects.get(
                         newsletter=self.newsletter, contact=contact,