style50 doesn't properly lint C compound literal syntax

[Vivraan]

Where something like

RGBTRIPLE s =
{
    clampf_0_255(mag(g_x[2], g_y[2])),
    clampf_0_255(mag(g_x[1], g_y[1])),
    clampf_0_255(mag(g_x[0], g_y[0]))
};

temp[y][x] = s;

is understood, switching to a compound literal

temp[y][x] = (RGBTRIPLE)
{
    clampf_0_255(mag(g_x[2], g_y[2])),
    clampf_0_255(mag(g_x[1], g_y[1])),
    clampf_0_255(mag(g_x[0], g_y[0]))
};

shows up as: