libix3: fix depth maintenance precedence

*depth-- should be (*depth)-- etc.

Basically repeating the same fix I just made in libix2 as the
share a common ancestry

1 files changed, 4 insertions, 4 deletions

diff --git a/src/ix3.c b/src/ix3.c
index 81a71c3..3cdc5d1 100644
--- a/src/ix3.c
+++ b/src/ix3.c
@@ -426,7 +426,7 @@ static ix3_object_t * add_object(ix3_t *ix3, unsigned *depth, ix3_node_t *node,
 		bb3f_t	octrants[8];
 		int	i;
 
-		*depth++;
+		(*depth)++;
 		init_octrants(octrants, node_aabb, &node->center);
 		for (i = 0; i < 8; i++) {
 			if (!aabb_overlap(NULL, NULL, &octrants[i], &object->position, &object->origin, &object->aabb))
@@ -435,7 +435,7 @@ static ix3_object_t * add_object(ix3_t *ix3, unsigned *depth, ix3_node_t *node,
 			if (!add_object(ix3, depth, &node->children[i], &octrants[i], object, reference_cache))
 				goto _fail;
 		}
-		*depth--;
+		(*depth)--;
 
 		return object;
 	}
@@ -446,10 +446,10 @@ static ix3_object_t * add_object(ix3_t *ix3, unsigned *depth, ix3_node_t *node,
 
 	/* If the node is overflowing, split it */
 	if (node->n_objects > ix3->max_per_node && *depth < ix3->max_depth) {
-		*depth++;
+		(*depth)++;
 		if (!split_node(ix3, depth, node, node_aabb))
 			goto _fail;
-		*depth--;
+		(*depth)--;
 	}
 
 	return object;