[riot-notifications] [RIOT-OS/RIOT] net/gnrc_netif_lorawan: fix unaligned copy (#14058)

José Alamos notifications at github.com
Tue May 12 13:45:54 CEST 2020

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### Contribution description
This PR fixes an unaligned copy when setting the Device Address. The address array is not necessarily aligned because it's an `uint8_t` array, so parsing that to `uint32_t` might violate aligned memory access in Cortex M.

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### Testing procedure
I got these weird hardfaults while refactoring `gnrc_lorawan`. I'm not sure if it's easy to reproduce the crash, but at least it should be enough to run `examples/gnrc_lorawan` and make sure it still joins, sends, etc.

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### Issues/PRs references
None so far
Examples: Fixes #1234. See also #5678. Depends on PR #9876.

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-- Commit Summary --

  * net/gnrc_netif_lorawan: fix unaligned copy

-- File Changes --

    M sys/net/gnrc/netif/lorawan/gnrc_netif_lorawan.c (3)

-- Patch Links --


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