udhcpc: tweak --help

function                                             old     new   delta
packed_usage                                       33324   33315      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index dcec8cd..d491e89 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -1209,13 +1209,13 @@
 //usage:     "\n	-t N		Send up to N discover packets (default 3)"
 //usage:     "\n	-T SEC		Pause between packets (default 3)"
 //usage:     "\n	-A SEC		Wait if lease is not obtained (default 20)"
+//usage:	USE_FOR_MMU(
+//usage:     "\n	-b		Background if lease is not obtained"
+//usage:	)
 //usage:     "\n	-n		Exit if lease is not obtained"
 //usage:     "\n	-q		Exit after obtaining lease"
 //usage:     "\n	-R		Release IP on exit"
 //usage:     "\n	-f		Run in foreground"
-//usage:	USE_FOR_MMU(
-//usage:     "\n	-b		Background if lease is not obtained"
-//usage:	)
 //usage:     "\n	-S		Log to syslog too"
 //usage:	IF_FEATURE_UDHCPC_ARPING(
 //usage:     "\n	-a[MSEC]	Validate offered address with ARP ping"