From bcb498b9e94e7bf1aba5c489ed6cf7ccb198e75d Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 9 Aug 2012 02:57:15 +0000
Subject: Merge changes from lilv.

git-svn-id: http://svn.drobilla.net/zix/trunk@73 df6676b4-ccc9-40e5-b5d6-7c4628a128e3
---
 src/tree.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/tree.c b/src/tree.c
index 74f882a..8523228 100644
--- a/src/tree.c
+++ b/src/tree.c
@@ -100,12 +100,14 @@ ZIX_API
 void
 zix_tree_free(ZixTree* t)
 {
-	zix_tree_free_rec(t, t->root);
-	free(t);
+	if (t) {
+		zix_tree_free_rec(t, t->root);
+		free(t);
+	}
 }
 
 size_t
-zix_tree_size(ZixTree* t)
+zix_tree_size(const ZixTree* t)
 {
 	return t->size;
 }
@@ -618,7 +620,7 @@ ZIX_API
 void*
 zix_tree_get(ZixTreeIter* ti)
 {
-	return ti->data;
+	return ti ? ti->data : NULL;
 }
 
 ZIX_API
-- 
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