f tweak error text

Author: TheBlueMatt

lightning/src/ln/channel.rs

@@ -3527,7 +3527,7 @@ impl<Signer: Sign> Channel<Signer> {
 							self.update_time_counter += 1;
 							return Err(msgs::ErrorMessage {
 								channel_id: self.channel_id(),
-								data: "funding tx had wrong script/value".to_owned()
+								data: "funding tx had wrong script/value or output index".to_owned()
 							});
 						} else {
 							if self.is_outbound() {