[1.1.X] Fixed #10717 - Escape result of admin_media_prefix template tag.

from django.template import Library

from django.utils.encoding import iri_to_uri

register = Library()

        from django.conf import settings

    except ImportError:

        return ''

    return settings.ADMIN_MEDIA_PREFIX

    return iri_to_uri(settings.ADMIN_MEDIA_PREFIX)

admin_media_prefix = register.simple_tag(admin_media_prefix)