Merge branch 'ab/free-and-null'

A common pattern to free a piece of memory and assign NULL to the
pointer that used to point at it has been replaced with a new
FREE_AND_NULL() macro.

* ab/free-and-null:
  *.[ch] refactoring: make use of the FREE_AND_NULL() macro
  coccinelle: make use of the "expression" FREE_AND_NULL() rule
  coccinelle: add a rule to make "expression" code use FREE_AND_NULL()
  coccinelle: make use of the "type" FREE_AND_NULL() rule
  coccinelle: add a rule to make "type" code use FREE_AND_NULL()
  git-compat-util: add a FREE_AND_NULL() wrapper around free(ptr); ptr = NULL

1 files changed, 1 insertions, 2 deletions

diff --git a/sha1-array.c b/sha1-array.c
index 7d646ab..838b3bf 100644
--- a/sha1-array.c
+++ b/sha1-array.c
@@ -35,8 +35,7 @@ int oid_array_lookup(struct oid_array *array, const struct object_id *oid)
 
 void oid_array_clear(struct oid_array *array)
 {
-	free(array->oid);
-	array->oid = NULL;
+	FREE_AND_NULL(array->oid);
 	array->nr = 0;
 	array->alloc = 0;
 	array->sorted = 0;