use new mkwsysrules.sh location

src/cmd/rio/mkfile

diff --git a/src/cmd/rio/mkfile b/src/cmd/rio/mkfile
index 5f346d6..3f42b2c 100644
--- a/src/cmd/rio/mkfile
+++ b/src/cmd/rio/mkfile
@@ -1,5 +1,5 @@
 <$PLAN9/src/mkhdr
-<|sh $PLAN9/src/libdraw/mkwsysrules.sh	# for X11
+<|sh ../devdraw/mkwsysrules.sh	# for X11
 
 OFILES=\
 	client.$O\