suppress warnings about easch <applet>_main() having
no preceding prototype
diff --git a/networking/nc.c b/networking/nc.c
index dc9102b..c1e8811 100644
--- a/networking/nc.c
+++ b/networking/nc.c
@@ -18,6 +18,7 @@
 	bb_error_msg_and_die("timed out");
 }
 
+int nc_main(int argc, char **argv);
 int nc_main(int argc, char **argv)
 {
 	/* sfd sits _here_ only because of "repeat" option (-l -l). */