udhcpc: trim help text, rename badly-named variable

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index f202ecf..3a4ef9e 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -1055,7 +1055,7 @@
 //usage:#endif
 //usage:#define udhcpc_trivial_usage
 //usage:       "[-fbnq"IF_UDHCP_VERBOSE("v")"oCRB] [-i IFACE] [-r IP] [-s PROG] [-p PIDFILE]\n"
-//usage:       "	[-H HOSTNAME] [-V VENDOR] [-x OPT:VAL]... [-O OPT]..." IF_FEATURE_UDHCP_PORT(" [-P N]")
+//usage:       "	[-V VENDOR] [-x OPT:VAL]... [-O OPT]..." IF_FEATURE_UDHCP_PORT(" [-P N]")
 //usage:#define udhcpc_full_usage "\n"
 //usage:	IF_LONG_OPTS(
 //usage:     "\n	-i,--interface IFACE	Interface to use (default eth0)"
@@ -1132,8 +1132,8 @@
 //usage:	)
 //usage:	)
 //usage:     "\nSignals:"
-//usage:     "\n	USR1	Renew current lease"
-//usage:     "\n	USR2	Release current lease"
+//usage:     "\n	USR1	Renew lease"
+//usage:     "\n	USR2	Release lease"
 
 
 int udhcpc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;