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/trafgen.c b/trafgen.c
index 553dfa5..efd83ef 100644
--- a/trafgen.c
+++ b/trafgen.c
@@ -977,7 +977,7 @@ int main(int argc, char **argv)
 {
 	bool slow = false, invoke_cpp = false, reseed = true, cpustats = true;
 	bool prio_high = false, set_irq_aff = true, set_sock_mem = true;
-	int c, opt_index, vals[4] = {0}, irq;
+	int c, vals[4] = {0}, irq;
 	uint64_t gap = 0;
 	unsigned int i;
 	char *confname = NULL, *ptr;
@@ -1001,7 +1001,7 @@ int main(int argc, char **argv)
 	ctx.reserve_size = 512 * (1 << 10);
 
 	while ((c = getopt_long(argc, argv, short_options, long_options,
-				&opt_index)) != EOF) {
+				NULL)) != EOF) {
 		switch (c) {
 		case 'h':
 			help();