get_ref_dir(): change signature

Change get_ref_dir() to take a (struct ref_cache *) in place of the
submodule name.

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

refs.c

@@ -298,14 +298,14 @@ static struct ref_array *get_packed_refs(struct ref_cache *refs)
 	return &refs->packed;
 }
 
-static void get_ref_dir(const char *submodule, const char *base,
+static void get_ref_dir(struct ref_cache *refs, const char *base,
 			struct ref_array *array)
 {
 	DIR *dir;
 	const char *path;
 
-	if (*submodule)
-		path = git_path_submodule(submodule, "%s", base);
+	if (*refs->name)
+		path = git_path_submodule(refs->name, "%s", base);
 	else
 		path = git_path("%s", base);
 
@@ -336,19 +336,19 @@ static void get_ref_dir(const char *submodule, const char *base,
 			if (has_extension(de->d_name, ".lock"))
 				continue;
 			memcpy(refname + baselen, de->d_name, namelen+1);
-			refdir = submodule
-				? git_path_submodule(submodule, "%s", refname)
+			refdir = *refs->name
+				? git_path_submodule(refs->name, "%s", refname)
 				: git_path("%s", refname);
 			if (stat(refdir, &st) < 0)
 				continue;
 			if (S_ISDIR(st.st_mode)) {
-				get_ref_dir(submodule, refname, array);
+				get_ref_dir(refs, refname, array);
 				continue;
 			}
-			if (submodule) {
+			if (*refs->name) {
 				hashclr(sha1);
 				flag = 0;
-				if (resolve_gitlink_ref(submodule, refname, sha1) < 0) {
+				if (resolve_gitlink_ref(refs->name, refname, sha1) < 0) {
 					hashclr(sha1);
 					flag |= REF_ISBROKEN;
 				}
@@ -400,7 +400,7 @@ void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname)
 static struct ref_array *get_loose_refs(struct ref_cache *refs)
 {
 	if (!refs->did_loose) {
-		get_ref_dir(refs->name, "refs", &refs->loose);
+		get_ref_dir(refs, "refs", &refs->loose);
 		sort_ref_array(&refs->loose);
 		refs->did_loose = 1;
 	}