gitk "Parent" is wrong

Hello.
I noticed a bug in gitk (as delivered with Git for Windows 1.8.4.msysgit.0).

The description of the current commit (left down quarter) does
contain items "Parent:" and "Child:".

This is not true if gitk is called with a <path> parameter.

These should actually be labeled "Previous" and "Next", as they point
to the neighbours is the displayed list of commits.

Have a nice day,
	Stepan Kasal