spdlog_0: fix build w/glibc-2.34
spdlog_0: fix build w/glibc-2.34

The patch only appears necessary for spdlog_1, so we skip it for v0
which builds fine without it.

Failing Hydra build: https://hydra.nixos.org/build/163659629

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