gdi32: Don't truncate the added pixels with FT_LCD_FILTER_DEFAULT.

[Byeongsik Jeon]

This patch fix the color fringing issue reported by Erik Johnson [1].

[1] http://bugs.winehq.org/show_bug.cgi?id=10342#c32

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 dlls/gdi32/freetype.c |   61 +++++++++++++++++++++++++++++++++---------------
 1 files changed, 42 insertions(+), 19 deletions(-)

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