Fix #119862: poly build crash when adding first vertex in empty geometry

object_index is not found (-1) when all mesh data is deleted hence it
crashes when accessing base from the vector at index -1.
So skip the further execution to prevent crash.

Pull Request: https://projects.blender.org/blender/blender/pulls/119865

source/blender/editors/space_view3d/view3d_gizmo_preselect_type.cc

@@ -505,7 +505,7 @@ void ED_view3d_gizmo_mesh_preselect_get_active(bContext *C,
   /* weak, allocate an array just to access the index. */
   Base *base = nullptr;
   Object *obedit = nullptr;
-  {
+  if (object_index != -1) {
     Vector<Base *> bases = BKE_view_layer_array_from_bases_in_edit_mode(
         scene, view_layer, CTX_wm_view3d(C));
     if (object_index < bases.size()) {