coccinelle: make use of the "type" FREE_AND_NULL() rule

diff --git a/tree.c b/tree.c
index 603b29ee805b00c4b1eeeebed51c917bfef7c009..614f91586d6f4d70815214812ace3e1981a697b5 100644 (file)
--- a/tree.c
+++ b/tree.c
@@ -226,8 +226,7 @@ int parse_tree_gently(struct tree *item, int quiet_on_missing)
 
 void free_tree_buffer(struct tree *tree)
 {
-       free(tree->buffer);
-       tree->buffer = NULL;
+       FREE_AND_NULL(tree->buffer);
        tree->size = 0;
        tree->object.parsed = 0;
 }