libtiff: tiffcrop: Correct simple copy paste error. Fix #488.

SDL Commits
1 
From 97d65859bc29ee334012e9c73022d8a8e55ed586 Mon Sep 17 00:00:00 2001
From: Su Laus <[EMAIL REDACTED]>
Date: Sat, 21 Jan 2023 15:58:10 +0000
Subject: [PATCH] tiffcrop: Correct simple copy paste error. Fix #488.

---
 tools/tiffcrop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c
index 14fa18da..7db69883 100644
--- a/tools/tiffcrop.c
+++ b/tools/tiffcrop.c
@@ -8591,7 +8591,7 @@ static int processCropSelections(struct image_data *image,
                     cropsize + NUM_BUFF_OVERSIZE_BYTES);
             else
             {
-                prev_cropsize = seg_buffs[0].size;
+                prev_cropsize = seg_buffs[i].size;
                 if (prev_cropsize < cropsize)
                 {
                     next_buff = _TIFFrealloc(