Inconsitency in list.c

[phenixia2003]

Hello,

In del_row_cb(), when options.list_data.row_action is set, the selected row is deleted only when row_action returns 0. But, in add_row_cb(), a new row is always added regardless the value returned by row_action.

The attached patch solves this.

add_row_cb.patch.txt

-- SeB