segfault adding images + problems with locations

[Jan Darowski]

I will fix this warning on widgets startup, it can be ignored.

The problem with segfault seems to appear when there is no dive site
specified but picture has some gps coordinates (it's strange that no
one noticed it before, it's an old issue).
Here is the patch. I checked it with hand made exif data. Please, see
if it helps, there can be more wild pointers in the neighborhood.

2015-03-16 19:11 GMT+01:00 Willem Ferguson <willemferguson at zoology.up.ac.za>:
> On 16/03/2015 19:11, Pedro Neves wrote:
>
> Hi all:
>
>
> Also, after I download a dive from my dive computer (Uwatec Tec 2G), I'm
> trying to insert the information for the dive site. I write the name of the
> site and press manage.
> On the divesite dialog, all fields are empty. I insert the information (name
> and coordinates) When I press "Apply changes".
>  I get back to the notes tab. The location field has the name of my dive
> site (in yellow). I press "Apply changes" changes, but the divesite doesn't
> show up on the map, and if I select another dive, the location I've just
> inserted disapears.
>
> The same happens if I try all this with a new logbook.
>
>
> I'm using Debian/Sid...
>
> Cheers:
>
> Pedro
>
> See # 854
> willem
>
>
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