all: Remove unused longindex parameter to getopt_long()

All tools (except mausezahn) use getopt_long() and pass a pointer to a
local opt_index variable for the longindex parameter. However, this
variable is never read afterwards.

According to getopt(3) it's perfectly fine to pass NULL as the longindex
parameter instead, so do that.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/curvetun.c b/curvetun.c
index cf47510..61ddc85 100644
--- a/curvetun.c
+++ b/curvetun.c
@@ -546,7 +546,7 @@ static int main_server(char *home, char *dev, char *port, int udp,
 
 int main(int argc, char **argv)
 {
-	int ret = 0, c, opt_index, udp = 0, ipv4 = -1, daemon = 1, log = 1;
+	int ret = 0, c, udp = 0, ipv4 = -1, daemon = 1, log = 1;
 	char *port = NULL, *stun = NULL, *dev = NULL, *home = NULL, *alias = NULL;
 	enum working_mode wmode = MODE_UNKNOW;
 
@@ -556,7 +556,7 @@ int main(int argc, char **argv)
 	home = fetch_home_dir();
 
 	while ((c = getopt_long(argc, argv, short_options, long_options,
-	       &opt_index)) != EOF) {
+				NULL)) != EOF) {
 		switch (c) {
 		case 'h':
 			help();