[freetype2] 1077-out-of-range-access-in-the-signed-distance-field-implementation be6ab31: [sdf] Fix out-of-range-access.

[Werner Lemberg]

branch: 1077-out-of-range-access-in-the-signed-distance-field-implementation
commit be6ab319009c5de7927adb0228412627783499e5
Author: Anuj Verma <anujv@iitbhilai.ac.in>
Commit: Werner Lemberg <wl@gnu.org>

    [sdf] Fix out-of-range-access.
    
    * src/sdf/ftbsdf.c (first_pass, second_pass): Fix range during forward pass.
    Otherwise the index goes out of range for the last column.
    
    Fixes issue #1077.
---
 src/sdf/ftbsdf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/sdf/ftbsdf.c b/src/sdf/ftbsdf.c
index db4a2dd..d837a79 100644
--- a/src/sdf/ftbsdf.c
+++ b/src/sdf/ftbsdf.c
@@ -928,7 +928,7 @@
 
       /* Forward pass of rows (left -> right).  Leave the first  */
       /* column, which gets covered in the backward pass.        */
-      for ( i = 1; i < w; i++ )
+      for ( i = 1; i < w - 1; i++ )
       {
         index   = j * w + i;
         current = dm + index;
@@ -997,7 +997,7 @@
 
       /* Forward pass of rows (left -> right).  Leave the first */
       /* column, which gets covered in the backward pass.       */
-      for ( i = 1; i < w; i++ )
+      for ( i = 1; i < w - 1; i++ )
       {
         index   = j * w + i;
         current = dm + index;