[O] fix bug in ascii plot

The 16c7594 commit (found by bisecting) revealeda bug in ascii-plot. Attached is a fix. To test, consider this table: | 1 | | 2 | | 3 | The cursor being in the table, type C-c " a Result with the bug: | 1 | | | 2 | | | 3 | | #+TBLFM: 2='(orgtbl-ascii-draw $1 1 3 12) Result with the

Re: [O] fix bug in ascii plot

Hello, Thierry Banel writes: > The 16c7594 commit (found by bisecting) revealeda bug in ascii-plot. > Attached is a fix. > > To test, consider this table: > | 1 | > | 2 | > | 3 | > > The cursor being in the table, type C-c " a > > > Result with the bug: > | 1 | | > | 2 |