Make arv_buffer_get_status and possibly arv_stream_try_pop_buffer robust against "ARV_IS_BUFFER failed" issue

[denglerchr]

Is your feature request related to a problem? Please describe.
Yes, the feature request is related to #853 . It seems that due to network issues/camera issues, invalid buffers can be received and calling, e.g., arv_buffer_get_status throws an error "assertion ARV_IS_BUFFER failed".

Describe the solution you'd like
Instead of throwingn an error, arv_buffer_get_status could return a status indicating a broken buffer.
For arv_stream_try_pop_buffer, I am less sure if it is the right solution, but possibly this would return NULL instead of the buffer in case of weird broken buffers.

Describe alternatives you've considered
I found no alternative, I currently need to restart the acquisition program when this happens.

Additional context
I am using Aravis through a wrapper written in Julia (https://github.com/jwahlstrand/AravisCameras.jl).
Current workflow is calling arv_stream_try_pop_buffer followed by check for NULL followed by a check with arv_buffer_get_status where I then often receive an error.

[jwahlstrand]

I think these errors are caused by a mistake in a Julia package.

[EmmanuelP]

@jwahlstrand , what makes you think it comes from a julia package ?

[jwahlstrand]

Sorry for the noise, I think there are multiple things going on -- one of which is a bug in the Julia package for GObject introspection...