suggest explicit braces to avoid ambiguous 'else' [-Werror=dangling-else]

[Marco1971Repo]

Error in title compiling main stream:

for (auto &tmp : spi) {
      AD_LOGD("DriverPins::begin::SPI::begin");
      if (tmp.function == PinFunction::SD)
        if (sd_active)
          result &= tmp.begin();
      else
        result &= tmp.begin();
    }

I think that adding braces make code cleaer effectively

   for (auto &tmp : spi) {
      AD_LOGD("DriverPins::begin::SPI::begin");
      if (tmp.function == PinFunction::SD)
      {
        if (sd_active)
          result &= tmp.begin();
      else
        result &= tmp.begin();
      }
    }

[pschatzmann]

Feel free to submit a pull request