plot_utils: the height and width of pre_plot_setup() are the ones of the row of plots

This worked ok until pre_plot_setup() learnt to plot multiple rows of
plots.  With this patch, this works again.
1 file changed
tree: 5b77740d597a4d2fc45ac5d6ea188a21fbdf0568
  1. cr2/
  2. hooks/
  3. tests/
  4. .gitignore