chore: apply clippy suggestions

warning: usage of `FromIterator::from_iter`
   --> src/cmd/stats.rs:789:27
    |
789 |                 work_br = csv::ByteRecord::from_iter(vec![&*header].into_iter().chain(stat));
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `vec![&*header].into_iter().chain(stat).collect::<csv::ByteRecord<_>>()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_iter_instead_of_collect
    = note: `-W clippy::from-iter-instead-of-collect` implied by `-W clippy::pedantic`
    = help: to override `-W clippy::pedantic` add `#[allow(clippy::from_iter_instead_of_collect)]`

warning: implicitly cloning a `ByteRecord` by calling `to_owned` on its dereferenced type
   --> src/cmd/stats.rs:803:31
    |
803 |             stats_br_vec.push(dataset_stats_br.to_owned());
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `dataset_stats_br.clone()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_clone
    = note: `-W clippy::implicit-clone` implied by `-W clippy::pedantic`
    = help: to override `-W clippy::pedantic` add `#[allow(clippy::implicit_clone)]`

warning: implicitly cloning a `ByteRecord` by calling `to_owned` on its dereferenced type
   --> src/cmd/stats.rs:812:31
    |
812 |             stats_br_vec.push(dataset_stats_br.to_owned());
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `dataset_stats_br.clone()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_clone

warning: implicitly cloning a `ByteRecord` by calling `to_owned` on its dereferenced type
   --> src/cmd/stats.rs:825:31
    |
825 |             stats_br_vec.push(dataset_stats_br.to_owned());
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `dataset_stats_br.clone()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_clone

src/cmd/stats.rs

@@ -786,7 +786,10 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
                     header.to_vec()
                 };
                 let stat = stat.iter().map(str::as_bytes);
-                work_br = csv::ByteRecord::from_iter(vec![&*header].into_iter().chain(stat));
+                work_br = vec![&*header]
+                    .into_iter()
+                    .chain(stat)
+                    .collect::<csv::ByteRecord>();
                 wtr.write_record(&work_br)?;
                 stats_br_vec.push(work_br);
             }
@@ -800,7 +803,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
             }
             dataset_stats_br.push_field(itoa::Buffer::new().format(*record_count).as_bytes());
             wtr.write_record(&dataset_stats_br)?;
-            stats_br_vec.push(dataset_stats_br.to_owned());
+            stats_br_vec.push(dataset_stats_br.clone());
 
             dataset_stats_br.clear();
             dataset_stats_br.push_field(b"_qsv_columncount");
@@ -809,7 +812,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
             }
             dataset_stats_br.push_field(itoa::Buffer::new().format(headers.len()).as_bytes());
             wtr.write_record(&dataset_stats_br)?;
-            stats_br_vec.push(dataset_stats_br.to_owned());
+            stats_br_vec.push(dataset_stats_br.clone());
 
             dataset_stats_br.clear();
             dataset_stats_br.push_field(b"_qsv_filesize_bytes");
@@ -822,7 +825,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
                     .as_bytes(),
             );
             wtr.write_record(&dataset_stats_br)?;
-            stats_br_vec.push(dataset_stats_br.to_owned());
+            stats_br_vec.push(dataset_stats_br.clone());
 
             // compute the hash using stats, instead of scanning the entire file
             // so the performance is constant regardless of file size