ext2: trivial indentation fix.

This memset() line was indented with seven spaces, this patch fixes
it to use a tab instead. Yes, very trivial but it's the third time
I have to look at this line..

Signed-off-by: Luiz Capitulino <[e-mail]>
Signed-off-by: Adrian Bunk <[e-mail]>

fs/ext2/dir.c

···
 		goto fail;
 	}
 	kaddr = kmap_atomic(page, KM_USER0);
-       memset(kaddr, 0, chunk_size);
+	memset(kaddr, 0, chunk_size);
 	de = (struct ext2_dir_entry_2 *)kaddr;
 	de->name_len = 1;
 	de->rec_len = cpu_to_le16(EXT2_DIR_REC_LEN(1));