diskparts is always successful

Reference: /n/atom/patch/applied/diskpartsexit
Date: Tue Mar  4 16:18:17 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /rc/bin/diskparts	Tue Mar  4 16:18:13 2014
+++ /rc/bin/diskparts	Tue Mar  4 16:18:14 2014
@@ -32,3 +32,5 @@
 if (~ $#sysname 1 && ! ~ $sysname '' &&
     test -r /cfg/$sysname/fsconfig && test -w /dev/fs/ctl)
 	read -m /cfg/$sysname/fsconfig >/dev/fs/ctl
+
+exit ''