Undefined Offset caused by diff module

gistfile1.txt

https://www.a.achappell.allplayers.com/g/boyscoutsofamerica/node/222718
$path_map ... (Array, 2 elements)
0 (String, 4 characters ) node
1 (String, 6 characters ) 222718
Krumo version 0.2a | http://krumo.sourceforge.net Called from /mnt/apci/main/www/includes/menu.inc, line 580  
$link_map ... (Array, 6 elements)
0 (String, 4 characters ) node
1 (String, 6 characters ) 222718
2 (String, 9 characters ) revisions
3 (String, 4 characters ) view
4 (NULL)
5 (String, 1 characters ) %
Krumo version 0.2a | http://krumo.sourceforge.net Called from /mnt/apci/main/www/includes/menu.inc, line 581  
$router_item ... (Array, 20 elements)
path (String, 25 characters ) node/%/revisions/view/%/%
load_functions (Array, 3 elements)
to_arg_functions (String, 0 characters )
access_callback (String, 25 characters ) diff_node_revision_access | (Callback) diff_node_revision_access();
access_arguments (String, 14 characters ) a:1:{i:0;i:1;}
page_callback (String, 15 characters ) diff_diffs_show
page_arguments (String, 30 characters ) a:3:{i:0;i:1;i:1;i:4;i:2;i:5;}
fit (String, 2 characters ) 44
number_parts (String, 1 characters ) 6
tab_parent (String, 21 characters ) node/%/revisions/list
tab_root (String, 6 characters ) node/%
title (String, 4 characters ) Diff
title_callback (String, 1 characters ) t | (Callback) t();
title_arguments (String, 0 characters )
type (String, 3 characters ) 128
block_callback (String, 0 characters )
description (String, 0 characters )
position (String, 0 characters )
weight (String, 1 characters ) 0
file (String, 45 characters ) sites/all/modules/contrib/diff/diff.pages.inc
Krumo version 0.2a | http://krumo.sourceforge.net Called from /mnt/apci/main/www/includes/menu.inc, line 582