openmpi: fix segfault in btl vader at MPI_Finalize
openmpi: fix segfault in btl vader at MPI_Finalize

The fix is scheduled for release in OpenMPI 4.0.2.

Upstream issue: https://github.com/open-mpi/ompi/issues/6524

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs