message: Use if/let instead of empty match
diff: @@ -43,10 +43,7 @@ pub fn export(coverage_data: &TraceMap, config: &Config) -> Result<(), RunError>
  fnda.push(format!("FNDA:{},{}", fn_hits, fn_name));
  }
  - match trace.stats {
  - CoverageStat::Line(hits) => da.push((trace.line, hits)),
  - _ => (),
  - };
  + if let CoverageStat::Line(hits) = trace.stats { da.push((trace.line, hits)) }
  }
  for fn_line in fns.iter() {
  