refs: reorder some function definitions

This avoids the need to add forward declarations in the next step.

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

refs.c

@@ -1358,27 +1358,19 @@ static struct ref_store *main_ref_store;
 /* A linked list of ref_stores for submodules: */
 static struct ref_store *submodule_ref_stores;
 
-void base_ref_store_init(struct ref_store *refs,
-			 const struct ref_storage_be *be,
-			 const char *submodule)
+struct ref_store *lookup_ref_store(const char *submodule)
 {
-	refs->be = be;
-	if (!submodule) {
-		if (main_ref_store)
-			die("BUG: main_ref_store initialized twice");
+	struct ref_store *refs;
 
-		refs->submodule = "";
-		refs->next = NULL;
-		main_ref_store = refs;
-	} else {
-		if (lookup_ref_store(submodule))
-			die("BUG: ref_store for submodule '%s' initialized twice",
-			    submodule);
+	if (!submodule || !*submodule)
+		return main_ref_store;
 
-		refs->submodule = xstrdup(submodule);
-		refs->next = submodule_ref_stores;
-		submodule_ref_stores = refs;
+	for (refs = submodule_ref_stores; refs; refs = refs->next) {
+		if (!strcmp(submodule, refs->submodule))
+			return refs;
 	}
+
+	return NULL;
 }
 
 struct ref_store *ref_store_init(const char *submodule)
@@ -1395,21 +1387,6 @@ struct ref_store *ref_store_init(const char *submodule)
 		return be->init(submodule);
 }
 
-struct ref_store *lookup_ref_store(const char *submodule)
-{
-	struct ref_store *refs;
-
-	if (!submodule || !*submodule)
-		return main_ref_store;
-
-	for (refs = submodule_ref_stores; refs; refs = refs->next) {
-		if (!strcmp(submodule, refs->submodule))
-			return refs;
-	}
-
-	return NULL;
-}
-
 struct ref_store *get_ref_store(const char *submodule)
 {
 	struct ref_store *refs;
@@ -1435,6 +1412,29 @@ struct ref_store *get_ref_store(const char *submodule)
 	return refs;
 }
 
+void base_ref_store_init(struct ref_store *refs,
+			 const struct ref_storage_be *be,
+			 const char *submodule)
+{
+	refs->be = be;
+	if (!submodule) {
+		if (main_ref_store)
+			die("BUG: main_ref_store initialized twice");
+
+		refs->submodule = "";
+		refs->next = NULL;
+		main_ref_store = refs;
+	} else {
+		if (lookup_ref_store(submodule))
+			die("BUG: ref_store for submodule '%s' initialized twice",
+			    submodule);
+
+		refs->submodule = xstrdup(submodule);
+		refs->next = submodule_ref_stores;
+		submodule_ref_stores = refs;
+	}
+}
+
 void assert_main_repository(struct ref_store *refs, const char *caller)
 {
 	if (*refs->submodule)