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-rw-r--r--fitz/res_halftone.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fitz/res_halftone.c b/fitz/res_halftone.c
index 3b5e0e51..f8bef236 100644
--- a/fitz/res_halftone.c
+++ b/fitz/res_halftone.c
@@ -99,7 +99,7 @@ static void make_ht_line(unsigned char *buf, fz_halftone *ht, int x, int y, int
assert(tile->n == 1);
/* Left hand section; from x to tile width */
- tbase = tile->samples + py * tw;
+ tbase = tile->samples + (unsigned int)(py * tw);
t = tbase + px;
len = tw - px;
if (len > w2)