convert {read,fill}_directory to take struct pathspec

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/clean.c b/builtin/clean.c
index fdd4980..d540ca4 100644
--- a/builtin/clean.c
+++ b/builtin/clean.c
@@ -214,7 +214,7 @@
 		       PATHSPEC_PREFER_CWD,
 		       prefix, argv);
 
-	fill_directory(&dir, pathspec.raw);
+	fill_directory(&dir, &pathspec);
 
 	for (i = 0; i < dir.nr; i++) {
 		struct dir_entry *ent = dir.entries[i];