Nikolay Sivov : dwrite: Use correct glyph array offset for alternate substitution table output.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 384067bda6d36bb1871805fc5bd8540139b952a3
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=384067bda6d36bb1871805fc5...

Author: Nikolay Sivov <nsivov(a)codeweavers.com>
Date:   Fri Jun  5 16:52:28 2020 +0300

dwrite: Use correct glyph array offset for alternate substitution table output.

Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/dwrite/opentype.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/dwrite/opentype.c b/dlls/dwrite/opentype.c
index fc46610bcb..2106fe2cf7 100644
--- a/dlls/dwrite/opentype.c
+++ b/dlls/dwrite/opentype.c
@@ -4916,7 +4916,7 @@ static BOOL opentype_layout_apply_gsub_alt_substitution(struct scriptshaping_con
         if (alt_index > count || !alt_index)
             return FALSE;
 
-        glyph = table_read_be_word(gsub, subtable_offset + offset + sizeof(count) + (alt_index - 1) * sizeof(glyph));
+        glyph = table_read_be_word(gsub, subtable_offset + offset + 2 + (alt_index - 1) * sizeof(glyph));
     }
     else
     {