dwm releases before 5.3 read the status text from stdin.
This patch is mainly a workaround for the freezing issue caused by
XSelectInput with the previous version of the warp patch.
Some people might like to write their status to a pipe, though.
This was originally part of dwm-5.2 and written by Anselm R. Garbe. It was ported to later versions of dwm by Moritz Wilhelmy, mw wzff de.