Fix unused error warning

client/cli/src/params/mod.rs

@@ -44,7 +44,7 @@ pub use crate::params::{
 pub fn parse_ss58_address_format(x: &str) -> Result<Ss58AddressFormat, String> {
 	match Ss58AddressFormatRegistry::try_from(x) {
 		Ok(format_registry) => Ok(format_registry.into()),
-		Err(e) => Err(format!(
+		Err(_) => Err(format!(
 			"Unable to parse variant. Known variants: {:?}",
 			Ss58AddressFormat::all_names()
 		)),