fsck: declare functions as static

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
diff --git a/fsck/fsck.c b/fsck/fsck.c
index 96f0af2..9bef870 100644
--- a/fsck/fsck.c
+++ b/fsck/fsck.c
@@ -587,7 +587,7 @@
 	return ret;
 }
 
-int exfat_de_iter_init(struct exfat_de_iter *iter, struct exfat *exfat,
+static int exfat_de_iter_init(struct exfat_de_iter *iter, struct exfat *exfat,
 						struct exfat_inode *dir)
 {
 	ssize_t ret;
@@ -615,8 +615,8 @@
 	return 0;
 }
 
-int exfat_de_iter_get(struct exfat_de_iter *iter,
-					int ith, struct exfat_dentry **dentry)
+static int exfat_de_iter_get(struct exfat_de_iter *iter,
+				int ith, struct exfat_dentry **dentry)
 {
 	off_t de_next_file_offset;
 	int de_next_offset;
@@ -671,7 +671,7 @@
  * @skip_dentries must be the largest @ith + 1 of exfat_de_iter_get
  * since the last call of exfat_de_iter_advance
  */
-int exfat_de_iter_advance(struct exfat_de_iter *iter, int skip_dentries)
+static int exfat_de_iter_advance(struct exfat_de_iter *iter, int skip_dentries)
 {
 	if (skip_dentries != iter->max_skip_dentries)
 		return -EINVAL;
@@ -682,7 +682,7 @@
 	return 0;
 }
 
-off_t exfat_de_iter_file_offset(struct exfat_de_iter *iter)
+static off_t exfat_de_iter_file_offset(struct exfat_de_iter *iter)
 {
 	return iter->de_file_offset;
 }