Fix external extra (#4777)

* Fix empty table from externals

* Fix empty table from externals

src/eval_file.rs

@@ -100,7 +100,12 @@ pub fn print_table_or_error(
             );
 
             match table {
-                Ok(table) => {
+                Ok(mut table) => {
+                    let exit_code = match &mut table {
+                        PipelineData::ExternalStream { exit_code, .. } => exit_code.take(),
+                        _ => None,
+                    };
+
                     for item in table {
                         let stdout = std::io::stdout();
 
@@ -120,6 +125,10 @@ pub fn print_table_or_error(
                             Err(err) => eprintln!("{}", err),
                         };
                     }
+
+                    if let Some(exit_code) = exit_code {
+                        let _: Vec<_> = exit_code.into_iter().collect();
+                    }
                 }
                 Err(error) => {
                     let working_set = StateWorkingSet::new(engine_state);

src/main.rs

@@ -172,11 +172,11 @@ fn main() -> Result<()> {
                 let buf_reader = BufReader::new(stdin);
 
                 PipelineData::ExternalStream {
-                    stdout: RawStream::new(
+                    stdout: Some(RawStream::new(
                         Box::new(BufferedReader::new(buf_reader)),
                         Some(ctrlc),
                         redirect_stdin.span,
-                    ),
+                    )),
                     stderr: None,
                     exit_code: None,
                     span: redirect_stdin.span,