Easy to reproduce using Wikipedia.
Created attachment 225298 [details]
Attachment 225298 [details] did not pass style-queue:
ERROR: Source/WebKit2/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] 
Total errors found: 1 in 2 files
If any of these errors are false positives, please file a bug against check-webkit-style.
Committed revision 164750.