[Dev-luatex] Fix PDF whatsits

[Hans Hagen]

On 8/14/2018 7:24 PM, Marcel Krüger wrote:
> Hello,
> 
> I attached a little patch to avoid SEGFAULTs when the backend encounters `pdf_annot`, `pdf_start_link`, `pdf_dest` or `pdf_thread` whatsits.
> The SEGFAULT was introduced in revision 6738.
hm, indeed this need to be fixed but with another kind of patch. will do

Hans

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