fix: use exit code 1 in case of error

Author: va-an

src/main.rs

@@ -51,7 +51,9 @@ fn main() {
                 Error::ChecksumMismatch => error!("Descriptor checksum mismatch. Are you using a different descriptor for an already defined wallet name? (if you are not specifying the wallet name it is automatically named based on the descriptor)"),
                 e => error!("{}", e.to_string()),
             }
-        },
+
+            std::process::exit(1);
+        }
     }
 }