megacmd: fix 'AM_INIT_AUTOMAKE expanded multiple times' build error
megacmd: fix 'AM_INIT_AUTOMAKE expanded multiple times' build error

megacmd fails to build with autoconf >=1.16.5, where this became
an error

closes #153230

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