[freetype2] master 9bf72966e: * src/truetype/ttgxvar.c (ft_var_to_normalized): Fix undefined left-shift.

[Werner Lemberg]

branch: master
commit 9bf72966ed75353442df205e82b7080fb8a7bb47
Author: Werner Lemberg <wl@gnu.org>
Commit: Werner Lemberg <wl@gnu.org>

    * src/truetype/ttgxvar.c (ft_var_to_normalized): Fix undefined left-shift.
    
    Reported as
    
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63723
---
 src/truetype/ttgxvar.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index ad4f266b2..78b80782a 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -2141,7 +2141,8 @@
                                          outerIndex,
                                          innerIndex );
 
-         v += delta << 2;
+          /* Convert to 16.16 format before adding. */
+         v += delta * 4;
 
          /* Clamp value range. */
          v = v >=  0x10000L ?  0x10000 : v;