When compiling with `CFLAGS="-O2 -fexceptions -Wp,-D_FORTIFY_SOURCE=2"`, as
done per default when creating an AUR package e.g. via `makepkg`, this
error is produced.
Refactor `stanza_create_mam_iq()` in order to fix said warning-turned-into-
an-error.
Edit by jubalh:
I still think the error message is a false positive. But this commit improves the
code a lot.
Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>
d8eea87f60