Update captcha.go
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@ -62,7 +62,7 @@ func newDefaultOption(width, height int) *Options {
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return &Options{
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return &Options{
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BackgroundColor: color.Transparent,
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BackgroundColor: color.Transparent,
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CharPreset: charPreset,
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CharPreset: charPreset,
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TextLength: 4,
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TextLength: 6,
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CurveNumber: 2,
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CurveNumber: 2,
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FontDPI: 72.0,
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FontDPI: 72.0,
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FontScale: 1.0,
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FontScale: 1.0,
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