Bugfix: backtraces may not always be present in exceptions

Author: defunkt

lib/resque/failure/hoptoad.rb

@@ -109,7 +109,7 @@ def xml
       end
 
       def fill_in_backtrace_lines(x)
-        exception.backtrace.each do |unparsed_line|
+        Array(exception.backtrace).each do |unparsed_line|
           _, file, number, method = unparsed_line.match(INPUT_FORMAT).to_a
           x.line :file => file,:number => number
         end

lib/resque/failure/redis.rb

@@ -9,7 +9,7 @@ def save
           :payload   => payload,
           :exception => exception.class.to_s,
           :error     => exception.to_s,
-          :backtrace => exception.backtrace,
+          :backtrace => Array(exception.backtrace),
           :worker    => worker.to_s,
           :queue     => queue
         }
@@ -24,11 +24,11 @@ def self.count
       def self.all(start = 0, count = 1)
         Resque.list_range(:failed, start, count)
       end
-      
+
       def self.clear
         Resque.redis.del(:failed)
       end
-      
+
       def self.requeue(index)
         item = all(index)
         item['retried_at'] = Time.now.strftime("%Y/%m/%d %H:%M:%S")