Fix incorrect size given to bqueue_enqueue() call in dmu_redact.c

We pass sizeof (struct redact_record *) rather than sizeof (struct
redact_record). Passing the pointer size is wrong.

Coverity caught this in two places.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes openzfs#13885

module/zfs/dmu_redact.c

@@ -141,7 +141,7 @@ record_merge_enqueue(bqueue_t *q, struct redact_record **build,
 {
 	if (new->eos_marker) {
 		if (*build != NULL)
-			bqueue_enqueue(q, *build, sizeof (*build));
+			bqueue_enqueue(q, *build, sizeof (**build));
 		bqueue_enqueue_flush(q, new, sizeof (*new));
 		return;
 	}
@@ -823,7 +823,7 @@ perform_thread_merge(bqueue_t *q, uint32_t num_threads,
 	avl_destroy(&end_tree);
 	kmem_free(redact_nodes, num_threads * sizeof (*redact_nodes));
 	if (current_record != NULL)
-		bqueue_enqueue(q, current_record, sizeof (current_record));
+		bqueue_enqueue(q, current_record, sizeof (*current_record));
 	return (err);
 }