Merge "Add null colorspace protection" into main

    // If it's an unknown colortype then it's not a bitmap-backed canvas

    if (info.colorType() == SkColorType::kUnknown_SkColorType) return true;

    auto colorSpace = info.colorSpace();

    // If we don't have a colorspace, we can't apply a gainmap

    if (!colorSpace) return false;

    skcms_TransferFunction tfn;

    info.colorSpace()->transferFn(&tfn);

    colorSpace->transferFn(&tfn);

    auto transferType = skcms_TransferFunction_getType(&tfn);

    switch (transferType) {