From 50a4e190b4456f342f3106d8e0cc5087f4e2ea6c Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Thu, 2 Mar 2023 12:03:40 +0100
Subject: src/anim-atlas: fix bitmask undefined read

---
 src/anim-atlas.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/anim-atlas.cpp b/src/anim-atlas.cpp
index c6193b5b..27051db7 100644
--- a/src/anim-atlas.cpp
+++ b/src/anim-atlas.cpp
@@ -158,6 +158,7 @@ void anim_atlas::make_bitmask_(const ImageView2D& tex, BitArray& array)
                 (unsigned char)(buf[7*4] >= amin) << 7);
             dest[dst_idx] = value;
         }
+        dest[(height-j-1)*width+i >> 3] = 0;
         for (; i < width; i++)
         {
             unsigned char alpha = data[(j*stride + i*4)+3];
-- 
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