selftests/bpf: Remove second semicolon

There are statements with two semicolons. Remove the second one, it
is redundant.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240315092654.2431062-1-colin.i.king@gmail.com

tools/testing/selftests/bpf/benchs/bench_local_storage_create.c

@@ -186,7 +186,7 @@ static void *task_producer(void *input)
 
 		for (i = 0; i < batch_sz; i++) {
 			if (!pthd_results[i])
-				pthread_join(pthds[i], NULL);;
+				pthread_join(pthds[i], NULL);
 		}
 	}
 

tools/testing/selftests/bpf/progs/iters.c

@@ -673,7 +673,7 @@ static __noinline void fill(struct bpf_iter_num *it, int *arr, __u32 n, int mul)
 
 static __noinline int sum(struct bpf_iter_num *it, int *arr, __u32 n)
 {
-	int *t, i, sum = 0;;
+	int *t, i, sum = 0;
 
 	while ((t = bpf_iter_num_next(it))) {
 		i = *t;