regressions/ck_fifo: Add coverage for deinit routines.

regressions/ck_fifo/validate/ck_fifo_mpmc.c

@@ -117,6 +117,7 @@ main(int argc, char *argv[])
 {
 	int i, r;
 	struct context *context;
+	ck_fifo_mpmc_entry_t *garbage;
 	pthread_t *thread;
 
 	if (argc != 4) {
@@ -139,6 +140,10 @@ main(int argc, char *argv[])
 	assert(thread);
 
 	ck_fifo_mpmc_init(&fifo, malloc(sizeof(ck_fifo_mpmc_entry_t)));
+	ck_fifo_mpmc_deinit(&fifo, &garbage);
+	free(garbage);
+	ck_fifo_mpmc_init(&fifo, malloc(sizeof(ck_fifo_mpmc_entry_t)));
+
 	for (i = 0; i < nthr; i++) {
 		context[i].tid = i;
 		r = pthread_create(thread + i, NULL, test, context + i);

regressions/ck_fifo/validate/ck_fifo_spsc.c

@@ -144,6 +144,8 @@ main(int argc, char *argv[])
 	assert(thread);
 
 	for (i = 0; i < nthr; i++) {
+		ck_fifo_spsc_entry_t *garbage;
+
 		context[i].tid = i;
 		if (i == 0) {
 			context[i].previous = nthr - 1;
@@ -156,6 +158,9 @@ main(int argc, char *argv[])
 			context[i].previous = i - 1;
 		}
 
+		ck_fifo_spsc_init(fifo + i, malloc(sizeof(ck_fifo_spsc_entry_t)));
+		ck_fifo_spsc_deinit(fifo + i, &garbage);
+		free(garbage);
 		ck_fifo_spsc_init(fifo + i, malloc(sizeof(ck_fifo_spsc_entry_t)));
 		r = pthread_create(thread + i, NULL, test, context + i);
 		assert(r == 0);
@@ -166,3 +171,4 @@ main(int argc, char *argv[])
 
 	return (0);
 }
+