Jonas Jenwald 4eaa058c16 Add early returns to a couple of PDFLinkService methods, when there's no active PDF document
All of these methods will, in one way or another, cause e.g. scrolling or zooming to occur and consequently they don't really make sense unless there's an active PDF document. Especially since all of these methods end up calling into a `BaseViewer`-instance, which already contains similar early returns in essentially all of it's methods and setters.
2020-11-01 15:37:24 +01:00
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