fluentd.source0001.patch

diff --git a/lib/fluent/plugin/in_tail.rb b/lib/fluent/plugin/in_tail.rb
index 3ad5943f8..ac38f5eeb 100644
--- a/lib/fluent/plugin/in_tail.rb
+++ b/lib/fluent/plugin/in_tail.rb
@@ -509,7 +509,7 @@ module Fluent::Plugin
         if new_position_entry.read_inode == 0
           # When follow_inodes is true, it's not cleaned up by refresh_watcher.
           # So it should be unwatched here explicitly.
-          rotated_tw.unwatched = true
+          rotated_tw.unwatched = true if rotated_tw
           # Make sure to delete old key, it has a different ino while the hash key is same.
           @tails.delete(rotated_target_info)
           @tails[new_target_info] = setup_watcher(new_target_info, new_position_entry)