add_ref(): take a (struct ref_entry *) parameter

Take a pointer to the ref_entry to add to the array, rather than
creating the ref_entry within the function.  This opens the way to
having multiple kinds of ref_entries.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

refs.c

@@ -73,13 +73,8 @@ static struct ref_entry *create_ref_entry(const char *refname,
 }
 
 /* Add a ref_entry to the end of the ref_array (unsorted). */
-static void add_ref(const char *refname, const unsigned char *sha1,
-		    int flag, int check_name, struct ref_array *refs,
-		    struct ref_entry **new_ref)
+static void add_ref(struct ref_array *refs, struct ref_entry *ref)
 {
-	struct ref_entry *ref = create_ref_entry(refname, sha1, flag, check_name);
-	if (new_ref)
-		*new_ref = ref;
 	ALLOC_GROW(refs->refs, refs->nr + 1, refs->alloc);
 	refs->refs[refs->nr++] = ref;
 }
@@ -262,7 +257,8 @@ static void read_packed_refs(FILE *f, struct ref_array *array)
 
 		refname = parse_ref_line(refline, sha1);
 		if (refname) {
-			add_ref(refname, sha1, flag, 1, array, &last);
+			last = create_ref_entry(refname, sha1, flag, 1);
+			add_ref(array, last);
 			continue;
 		}
 		if (last &&
@@ -277,7 +273,7 @@ static void read_packed_refs(FILE *f, struct ref_array *array)
 
 void add_extra_ref(const char *refname, const unsigned char *sha1, int flag)
 {
-	add_ref(refname, sha1, flag, 0, &extra_refs, NULL);
+	add_ref(&extra_refs, create_ref_entry(refname, sha1, flag, 0));
 }
 
 void clear_extra_refs(void)
@@ -363,7 +359,7 @@ static void get_ref_dir(struct ref_cache *refs, const char *base,
 				hashclr(sha1);
 				flag |= REF_ISBROKEN;
 			}
-			add_ref(refname, sha1, flag, 1, array, NULL);
+			add_ref(array, create_ref_entry(refname, sha1, flag, 1));
 		}
 		free(refname);
 		closedir(dir);