Someone is not setting dwg->dirty_refs when reallocing some objects, 
leading to wrong ref->obj's, leading to unit-test errors/regressions.
find the culprit, blocks merge of the preR13 branch.


missing dwg->dirty_refs in preR13 regression
This is a GitHub Issue
repo:libredwg
owner:LibreDWG
Title : missing dwg->dirty_refs in preR13 regression
Issue date:

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Someone is not setting dwg->dirty_refs when reallocing some objects, 
leading to wrong ref->obj's, leading to unit-test errors/regressions.
find the culprit, blocks merge of the preR13 branch.


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