Alberto Bertogli d80c76f746 envelope: Handle zero-length keys in AddHeader ...

We don't expect the AddHeader function to be given an empty key;
however, if that were to happen, it currently crashes.

This patch fixes the bug, while also adding tests for that and other
similar cases.

2018-03-02 19:37:28 +00:00

1.6 KiB

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