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/astraceroute.c b/astraceroute.c
index 9600921..98b97e4 100644
--- a/astraceroute.c
+++ b/astraceroute.c
@@ -929,7 +929,7 @@ static int main_trace(struct ctx *ctx)
 
 int main(int argc, char **argv)
 {
-	int c, opt_index, ret;
+	int c, ret;
 	struct ctx ctx;
 
 	setfsuid(getuid());
@@ -949,7 +949,7 @@ int main(int argc, char **argv)
 	ctx.bind_addr = NULL;
 
 	while ((c = getopt_long(argc, argv, short_options, long_options,
-		&opt_index)) != EOF) {
+				NULL)) != EOF) {
 		switch (c) {
 		case 'h':
 			help();