Fixed error on select guest table

app/views/conferences/admin/_select_guest_table.html.haml

@@ -27,11 +27,11 @@
 		%tr.selectable{class: get_housing_match(host, registration, space).to_s.gsub('_', '-'), data: {host: host.id, guest: id, space: space}}
 			%th=registration.user.name
 			%td=registration.city
-			%td=_"articles.conference_registration.questions.housing.#{registration.housing}"
+			%td=registration.housing.present? ? (_"articles.conference_registration.questions.housing.#{registration.housing}") : ''
 			%td=date_span(registration.arrival.to_date, registration.departure.to_date)
 			- companion = companion(registration)
 			%td=companion.present? ? (companion.is_a?(User) ? companion.named_email : (_"articles.conference_registration.terms.registration_status.#{companion}")) : ''
-			%td=_"articles.conference_registration.questions.food.#{registration.food}"
+			%td=registration.food.present? ? (_"articles.conference_registration.questions.food.#{registration.food}") : ''
 			%td=registration.allergies
 			%td
 				.p=registration.other