sysutils/screen-devel: Update distfile

When unpacking the tarballs there is no material difference between the
old and the new files. Additionally, there is no difference when
comparing the two tarballs after unzipping the .gz files. One must
conclude the files are compressed differently as the new .gz file is 4K
smaller then the previous file.

(cherry picked from commit 7fd033436f0ef341f70e8592fa741d5b92b27fd9)