chart: fix data addition when one vote is already in
chart: fix data addition when one vote is already in

I checked the array length before iterating over the entries
and looking for the user vote. If no user has voted yet, we
just push the vote. The case that a vote has been registered
but the user has not voted yet was not caught.

This change simplifies it and removes the length check.

Muchos better.

Wayneoween/hiv,Wayneoween/hiv