fixed dnsmasq init for "ignore" option

dnsmasq.init tried to set range options even when ignore was
set to "1". Now the functions stops processing after evaluating
the "ignore" option when the result is > 0

SVN-Revision: 15618

package/dnsmasq/files/dnsmasq.init

@@ -220,7 +220,7 @@ dhcp_add() {
 		DNS_SERVERS="$DNS_SERVERS $dnsserver"
 	}
 
-	append_bool "$cfg" ignore "-2 $ifname"
+	append_bool "$cfg" ignore "-2 $ifname" && return 0
 
 	config_get proto "$net" proto
 	[ static = "$proto" ] || return 0