Support ticket #1950: closing window after having selected a file

Prerequisities: latest vim with nerdtree installed.

To reproduce:

1) vim .

2) invoke command-t ( I use leader -t)

3) select a file

4) You see a error now, Ive filed a separate bug report on this issue so I will ignore it here.

5) close the file using :q

6) you are now taken back to the command-t window.

I would like to avoid step 6, so how can I setup command-t to close its buffer when I have selected a file?