pkg/ccn-lite: patch to fix use-after-free [backport 2022.07] #18488
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Backport of #18483
Contribution description
Testing procedure
Build the pkg/ccn-lite example with a current GCC. Before this patch, this fails as described in #18480 -- after, it passes.
Issues/PRs references
Closes: #18480
Found while doing final tests for the 2022.07-RC3 at RIOT-OS/Release-Specs#257
This has been reported upstream as cn-uofbasel/ccn-lite#388