[woff2] Don't use `FT_UInt64' (#56815).

* src/sfnt/sfwoff2.c (woff2_open_font): Use `FT_UInt32' for
`file_offset'.  This fixes builds on platforms where `FT_LONG64' is
not defined while still being sufficient to store a file offset.

ChangeLog

@@ -1,3 +1,11 @@
+2019-08-27  Dominik Röttsches  <drott@chromium.org>
+
+	[woff2] Don't use `FT_UInt64' (#56815).
+
+	* src/sfnt/sfwoff2.c (woff2_open_font): Use `FT_UInt32' for
+	`file_offset'.  This fixes builds on platforms where `FT_LONG64' is
+	not defined while still being sufficient to store a file offset.
+
 2019-08-27  Werner Lemberg  <wl@gnu.org>
 
 	[truetype] Prevent crash in `TT_Set_Named_Instance' (#56813).

src/sfnt/sfwoff2.c

@@ -1739,7 +1739,7 @@
 
     FT_UInt    glyf_index;
     FT_UInt    loca_index;
-    FT_UInt64  file_offset;
+    FT_UInt32  file_offset;
 
     FT_Byte*   sfnt        = NULL;
     FT_Stream  sfnt_stream = NULL;