a4bd3f7d7e
This patch does not bring functional changes, but it is a good change if we want to use these utilities in areas other than those using BMesh (eg painting editors). This is also a step to replace `ED_view3d_select_id_validate`. That function erroneously checks `V3D_INVALID_BACKBUF` which causes it to update unnecessarily. Reviewers: campbellbarton Differential Revision: https://developer.blender.org/D5072