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

Apply the result of the just-added coccinelle rule. This manually
excludes a few occurrences, mostly things that resulted in many
FREE_AND_NULL() on one line, that'll be manually fixed in a subsequent
change.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/tree.c b/tree.c
index 603b29ee80..614f91586d 100644
--- 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;
 }