imap_tester: Fixed build after Protocol.GetFolders() changes.

src/tests/add-ons/mail/imap/imap_tester.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2012, Axel Dörfler, [email protected].
+ * Copyright 2011-2013, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  */
 
@@ -67,8 +67,9 @@ static void
 do_folders(int argc, char** argv)
 {
 	IMAP::FolderList folders;
+	BString separator;
 
-	status_t status = sProtocol.GetFolders(folders);
+	status_t status = sProtocol.GetFolders(folders, separator);
 	if (status != B_OK) {
 		error("folders", status);
 		return;