SSD1309::lineClear does nothing

[blonguet]

Subject of the issue

No change on screen when SSD1309::lineClear is called.

The current code is:

void SSD1309::lineClear(hd_extent_t x0, hd_extent_t y0, hd_extent_t x1, hd_extent_t y1, uint16_t width)
    {
		SSD1309_Bite_t pix;
		pix.bite = 0x00;
    }

Obviously, this line of code is missing:
line( x0, y0, x1, y1, width, (color_t)&pix);
It works fine with it.