Allow clearing default order schedule

lib/foodsoft_date_util.rb

@@ -1,13 +1,14 @@
 module FoodsoftDateUtil
   # find next occurence given a recurring ical string and time
   def self.next_occurrence(start=Time.now, from=start, options={})
-    if options[:recurr]
+    occ = nil
+    if options && options[:recurr]
       schedule = IceCube::Schedule.new(start)
       schedule.add_recurrence_rule rule_from(options[:recurr])
       # @todo handle ical parse errors
       occ = (schedule.next_occurrence(from).to_time rescue nil)
     end
-    if occ && options[:time]
+    if options && options[:time] && occ
       occ = occ.beginning_of_day.advance(seconds: Time.parse(options[:time]).seconds_since_midnight)
     end
     occ