Fix bufferDrawLine
Missing 1 pixel in the middle of the vertical line.
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@ -27,7 +27,7 @@ void bufferDrawLine(unsigned char* buf, int pitch, int x1, int y1, int x2, int y
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p1 = buf + pitch * y1 + x1;
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p1 = buf + pitch * y1 + x1;
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p2 = buf + pitch * y2 + x2;
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p2 = buf + pitch * y2 + x2;
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while (p1 < p2) {
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while (p1 <= p2) {
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*p1 = color;
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*p1 = color;
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*p2 = color;
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*p2 = color;
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p1 += pitch;
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p1 += pitch;
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