libtiff: Since the 3.8 days sometime it's been sp->line and not line.

https://github.com/libsdl-org/libtiff/commit/e6783b12369c00906587d61e20d839d33b3a63ac

From e6783b12369c00906587d61e20d839d33b3a63ac Mon Sep 17 00:00:00 2001
From: Lee Howard <[EMAIL REDACTED]>
Date: Mon, 22 Feb 2010 21:14:56 +0000
Subject: [PATCH] Since the 3.8 days sometime it's been sp->line and not line.

---
 libtiff/tif_fax3.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libtiff/tif_fax3.c b/libtiff/tif_fax3.c
index ed3fd661..68b05984 100644
--- a/libtiff/tif_fax3.c
+++ b/libtiff/tif_fax3.c
@@ -1,4 +1,4 @@
-/* $Id: tif_fax3.c,v 1.43.2.6 2010-02-22 19:22:52 faxguy Exp $ */
+/* $Id: tif_fax3.c,v 1.43.2.7 2010-02-22 21:14:56 faxguy Exp $ */
 
 /*
  * Copyright (c) 1990-1997 Sam Leffler
@@ -1444,7 +1444,7 @@ Fax4Decode(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s)
                 ClrBits( 13 );
 		(*sp->fill)(buf, thisrun, pa, lastx);
 		UNCACHE_STATE(tif, sp);
-		return ( line ? 1 : -1);	/* don't error on badly-terminated strips */
+		return ( sp->line ? 1 : -1);	/* don't error on badly-terminated strips */
 	}
 	UNCACHE_STATE(tif, sp);
 	return (1);