Jan Mulder 26f6d95305 Core: Do not crash on save dives with no dive site (git storage)
And fix a crash very similar to the previous commit. When trying to
save (to git) with an empty dive site, ssrf crashes.

Again, add a simple guard to prevent this.

Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
2018-10-31 14:51:31 +00:00
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