minor refactoring

src/js_command_match/mod.rs

@@ -33,7 +33,8 @@ pub enum JsCmd {
 impl JsCmd {
     pub fn rust_command_generation(&self) -> Result<(Vec<String>, String), String> {
         let network = std::env::var("NEAR_NETWORK")
-            .unwrap_or_else(|_| std::env::var("NEAR_ENV").unwrap_or_else(|_| "testnet".to_owned()));
+            .or_else(|_| std::env::var("NEAR_ENV"))
+            .unwrap_or_else(|_| "testnet".to_owned());
         let message = "The command you tried to run is deprecated in the new NEAR CLI, but we tried our best to match the old command with the new syntax, try it instead:".to_string();
         let validator_extension_message = "The command you tried to run has been moved into its own CLI extension called near-validator.\nPlease, follow the installation instructions here: https://github.com/near-cli-rs/near-validator-cli-rs/blob/master/README.md".to_string();