Image replacement bug, did not inherit from predecessor

wiki/plugins/images/forms.py

@@ -42,7 +42,7 @@ class RevisionForm(forms.ModelForm):
             kwargs['commit'] = False
             revision = super(RevisionForm, self).save(*args, **kwargs)
             revision.set_from_request(self.request)
-            revision.set_from_request(self.request)
+            revision.inherit_predecessor(self.image)
             revision.save()
             self.image.add_revision(self.instance, save=True)
             return revision