remove all trailing whitespace

fs/afs.c

@@ -554,7 +554,7 @@ grub_afs_close (grub_file_t file)
 
 static grub_err_t
 grub_afs_dir (grub_device_t device, const char *path,
-              int (*hook) (const char *filename, 
+              int (*hook) (const char *filename,
 			   const struct grub_dirhook_info *info))
 {
   struct grub_afs_data *data = 0;;