Too much indentation in nested list

[rubenarslan]

The following R code, when rendered via rmarkdown

```{r}
pander::pander(list(w = (list(x = list(y=list(z="bla"))))))

yields

  * **w**:

      * **x**:

              * **y**:

                          * **z**: bla

i.e. the last two sub-levels are shown as code. 

I thought this could somehow could be fixed, by reducing the multiplier for indent.level in `pandoc.indent` and `pandoc.list.return` from 4 to 2, but there is someplace else where extra spaces are being introduced that I haven't figured out yet.

[daroczig]

Oh, great catch, thanks! I've just pushed a potential fix for this, can you please check?

[rubenarslan]

confirmed fixed!