builtin/merge.c: drop a parameter that is never used

diff --git a/walker.c b/walker.c
index be389dc9bf5161c31be29e3a72264fd6120a0bbc..633596e06fcaa1154980f95c858c61379c968d49 100644 (file)
--- a/walker.c
+++ b/walker.c
@@ -56,10 +56,7 @@ static int process_tree(struct walker *walker, struct tree *tree)
                if (!obj || process(walker, obj))
                        return -1;
        }
-       free(tree->buffer);
-       tree->buffer = NULL;
-       tree->size = 0;
-       tree->object.parsed = 0;
+       free_tree_buffer(tree);
        return 0;
 }