refs: convert peel_ref to struct object_id

Convert peel_ref (and its corresponding backend) to struct object_id.

This transformation was done with an update to the declaration,
definition, comments, and test helper and the following semantic patch:

@@
expression E1, E2;
@@
- peel_ref(E1, E2.hash)
+ peel_ref(E1, &E2)

@@
expression E1, E2;
@@
- peel_ref(E1, E2->hash)
+ peel_ref(E1, E2)

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

3 files changed, 4 insertions, 4 deletions

diff --git a/builtin/describe.c b/builtin/describe.c
index 29075dbd0f..352f8821fd 100644
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -181,7 +181,7 @@ static int get_name(const char *path, const struct object_id *oid, int flag, voi
 	}
 
 	/* Is it annotated? */
-	if (!peel_ref(path, peeled.hash)) {
+	if (!peel_ref(path, &peeled)) {
 		is_annotated = !!oidcmp(oid, &peeled);
 	} else {
 		oidcpy(&peeled, oid);
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 9c6b224973..631de28761 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -562,7 +562,7 @@ static int mark_tagged(const char *path, const struct object_id *oid, int flag,
 
 	if (entry)
 		entry->tagged = 1;
-	if (!peel_ref(path, peeled.hash)) {
+	if (!peel_ref(path, &peeled)) {
 		entry = packlist_find(&to_pack, peeled.hash, NULL);
 		if (entry)
 			entry->tagged = 1;
@@ -2371,7 +2371,7 @@ static int add_ref_tag(const char *path, const struct object_id *oid, int flag,
 	struct object_id peeled;
 
 	if (starts_with(path, "refs/tags/") && /* is a tag? */
-	    !peel_ref(path, peeled.hash)    && /* peelable? */
+	    !peel_ref(path, &peeled)    && /* peelable? */
 	    packlist_find(&to_pack, peeled.hash, NULL))      /* object packed? */
 		add_tag_chain(oid);
 	return 0;
diff --git a/builtin/show-ref.c b/builtin/show-ref.c
index cbb8cfc7d2..41e5e71cad 100644
--- a/builtin/show-ref.c
+++ b/builtin/show-ref.c
@@ -38,7 +38,7 @@ static void show_one(const char *refname, const struct object_id *oid)
 	if (!deref_tags)
 		return;
 
-	if (!peel_ref(refname, peeled.hash)) {
+	if (!peel_ref(refname, &peeled)) {
 		hex = find_unique_abbrev(peeled.hash, abbrev);
 		printf("%s %s^{}\n", hex, refname);
 	}