[PATCH 1/1] dwrite: Fix off-by-one clustermap indexing (ASan).

[Bernhard Übelacker]

From: Bernhard Übelacker

Signed-off-by: Nikolay Sivov 
---
 dlls/dwrite/analyzer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/dwrite/analyzer.c b/dlls/dwrite/analyzer.c
index 0fab5b7142e..783312f68e8 100644
--- a/dlls/dwrite/analyzer.c
+++ b/dlls/dwrite/analyzer.c
@@ -1855,7 +1855,7 @@ static inline UINT32 get_cluster_length(UINT16 const *clustermap, UINT32 start,
     UINT16 g = clustermap[start];
     UINT32 length = 1;

-    while (start < text_len && clustermap[++start] == g)
+    while (start < (text_len - 1) && clustermap[++start] == g)
         length++;
     return length;
 }