Fix compile warning in do_stat() from previous fix.

diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
index e923403..c2baee9 100644
--- a/debugfs/debugfs.c
+++ b/debugfs/debugfs.c
@@ -596,7 +596,7 @@
 	struct ext2_inode * inode_buf;
 
 	if (check_fs_open(argv[0]))
-		return 1;
+		return;
 
 	inode_buf = (struct ext2_inode *)
 			malloc(EXT2_INODE_SIZE(current_fs->super));