[PATCH 21/30] search_ref_dir(): take (ref_entry *) instead of (ref_dir *)

@@ -248,15 +248,19 @@ static int ref_entry_cmp(const void *a, const void *b)
 static void sort_ref_dir(struct ref_dir *dir);
 
 /*
- * Return the entry with the given refname from the ref_dir
- * (non-recursively), sorting dir if necessary.  Return NULL if no
- * such entry is found.
+ * Return the entry with the given refname from direntry
+ * (non-recursively), sorting direntry if necessary.  Return NULL if
+ * no such entry is found.
  */
-static struct ref_entry *search_ref_dir(struct ref_dir *dir, const char *refname)
+static struct ref_entry *search_ref_dir(struct ref_entry *direntry,
+					const char *refname)
 {
 	struct ref_entry *e, **r;
 	int len;
+	struct ref_dir *dir;
 
+	assert(direntry->flag & REF_DIR);
+	dir = &direntry->u.subdir;
 	if (refname == NULL || !dir->nr)
 		return NULL;
 

@@ -286,8 +290,7 @@ static struct ref_entry *search_ref_dir(struct ref_dir *dir, const char *refname
 static struct ref_entry *search_for_subdir(struct ref_entry *direntry,
 					   const char *subdirname, int mkdir)
 {
-	struct ref_entry *entry = search_ref_dir(&direntry->u.subdir,
-						 subdirname);
+	struct ref_entry *entry = search_ref_dir(direntry, subdirname);
 	if (!entry) {
 		if (!mkdir)
 			return NULL;

@@ -338,7 +341,7 @@ static struct ref_entry *find_ref(struct ref_entry *direntry, const char *refnam
 	direntry = find_containing_direntry(direntry, refname, 0);
 	if (!direntry)
 		return NULL;
-	entry = search_ref_dir(&direntry->u.subdir, refname);
+	entry = search_ref_dir(direntry, refname);
 	return (entry && !(entry->flag & REF_DIR)) ? entry : NULL;
 }