use standard Ok(flush) idiom

src/cmd/jsonl.rs

@@ -179,5 +179,5 @@ Use `tojsonl` command to convert _to_ jsonl instead of _from_ jsonl."#,
  wtr.write_record(&record)?;
  }
 
- Ok(())
+ Ok(wtr.flush()?)
 }

src/cmd/partition.rs

@@ -157,6 +157,7 @@ impl Args {
  } else {
  wtr.write_byte_record(&row)?;
  }
+ wtr.flush()?;
  }
  Ok(())
  }

src/cmd/rename.rs

@@ -86,8 +86,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
  while rdr.read_byte_record(&mut record)? {
  wtr.write_record(&record)?;
  }
- wtr.flush()?;
- Ok(())
+ Ok(wtr.flush()?)
 }
 
 pub fn rename_headers_all_generic(num_of_cols: usize) -> String {

src/cmd/slice.rs

@@ -90,8 +90,7 @@ impl Args {
  for r in idx.byte_records().take(end - start) {
  wtr.write_byte_record(&r?)?;
  }
- wtr.flush()?;
- Ok(())
+ Ok(wtr.flush()?)
  }
 
  fn range(&self) -> Result<(usize, usize), String> {

src/cmd/table.rs

@@ -101,6 +101,5 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
  .map(|f| util::condense(Cow::Borrowed(f), args.flag_condense)),
  )?;
  }
- wtr.flush()?;
- Ok(())
+ Ok(wtr.flush()?)
 }