Fix getDriver crash #6
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Properly handle a NULL return from udev_device_get_driver. Change return type of getDriver to Maybe ByteString to account for a missing result. Add getDriver to the monitor example. Closes LeifW#5.
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Properly handle a NULL return from udev_device_get_driver.
Change return type of getDriver to Maybe ByteString to account for a missing result.
Add getDriver to the monitor example.
Closes #5.
The comment on the udev_device_get_driver C function indicates it can return NULL. I observed this on my system.
https://github.com/systemd/systemd/blob/e6267e832bc8/src/libudev/libudev-device.c#L120