nakamoto: sendrawtransaction will crash core lightning

[vincenzopalazzo]

While testing core lightning with nakamoto, I found a crash when I found a channel with core lightning

➜  VincentSSD clightning --testnet fundchannel 02dc20c9568d70ed13e76a757e45d8aabef62875932e130554394cb8596704ec29 40000
lightning-cli: reading response: socket closed
Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.Lost connection to the RPC socket.%