ProcessorManager: Use correct IOError class name

Author: eherot

lib/logstash/inputs/s3/processor_manager.rb

@@ -77,7 +77,7 @@ def start_processor(worker_id)
           tries = 0
           begin
             @processor.handle(remote_file)
-          rescue Errno::IOError => e
+          rescue IOError => e
             @logger.error(
               "IOError when processing remote file. Skipping for now (But not adding to SinceDB).",
               :remote_file => remote_file,