Updated the guard clause

Author: elsamaryv

app/controllers/mixins/actions/vm_actions/reconfigure.rb

@@ -213,7 +213,7 @@ def reconfigure_calculations(mbsize)
 
         # determine available switches for this host...
         def get_vlan_options(host)
-          return [] unless host.present?
+          return [] if host.blank?
 
           switch_ids = Rbac.filtered(host.switches).pluck(:id)
           Rbac.filtered(Lan.where(:switch_id => switch_ids).order(:name)).pluck(:name)