ea91025b9a
Make `expand_main` a local static function, there is no need for it to be in the public API anymore. (It was used in older, pre-'foreach-id' code, as a way to loop over ID usages. This is no more relevant for quite some time now.) Use a std::queue to store IDs to be expanded, instead of looping several times over all IDs of the current library Main until all have been expanded. (Cleaner, and will become necessary in upcoming packed IDs change, where IDs read/loaded from a same blendfile may end up in several different Mains). Pull Request: https://projects.blender.org/blender/blender/pulls/142878
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