usp10: Fix next index for RTL MultipleSubst.

MultipleSubst will expand the glyph array to the right, so when the writing direction is RTL the next index does not need to be modified by the new count of glyphs. Signed-off-by: Aric Stewart <aric@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

usp10: Fix next index for RTL MultipleSubst.
e2d4cf9e · Aric Stewart · Alexandre Julliard · 0401bdfa · e2d4cf9e
Commit e2d4cf9e authored Jan 27, 2017 by Aric Stewart Committed by Alexandre Julliard Jan 30, 2017
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opentype.c dlls/usp10/opentype.c +4 -1

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--- a/dlls/usp10/opentype.c
+++ b/dlls/usp10/opentype.c
@@ -940,7 +940,10 @@ static INT GSUB_apply_MultipleSubst(const OT_LookupTable *look, WORD *glyphs, IN
                TRACE("\n");
            }

-            return glyph_index + (sub_count * write_dir);
+            if (write_dir > 0)
+                return glyph_index + sub_count;
+            else
+                return glyph_index - 1;
        }
    }
    return GSUB_E_NOGLYPH;