Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- dwm/dwm.c.orig	2015-11-22 13:26:16.664650238 -0700
|+++ dwm/dwm.c	2015-11-22 13:25:57.407984351 -0700
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 52.
Hunk #2 succeeded at 1293.
done