Made `render_field()` return `SafeString` when field_instance is None.
Follow up to
@@ -107,7 +107,7 @@ def render_field( # noqa: C901
logging.warning("A field should only be rendered once: %s" % field, exc_info=sys.exc_info())
if field_instance is None:
- html = ""
+ html = SafeString("")
else:
if template is None:
if form.crispy_field_template is None:
