f - duplicate funding_txid message update

Author: ViktorT-11

lightning/src/ln/channelmanager.rs

@@ -4542,10 +4542,7 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
 				match id_to_peer.entry(chan.channel_id()) {
 					hash_map::Entry::Occupied(_) => {
 						return Err(MsgHandleErrInternal::send_err_msg_no_close(
-							"Funding txid already exists with for another peer (or likely the
-							same peer using a different id). The counterparty must have sent a
-							txid in the FundingCreated msgs for a tx with a different
-							script_pubkey than the one agreed upon".to_owned(),
+							"The funding_created message had the same funding_txid as an existing channel - funding is not possible".to_owned(),
 							funding_msg.channel_id))
 					},
 					hash_map::Entry::Vacant(i_e) => {