select(): Change `column_name` extraction to `to_owned()`

I had used `to_string()` before because the in-progress code wouldn't
let me use `to_owned()`. Now that I've changed things around, this is
possible.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/select.rs b/src/select.rs
index b1319e5..d3dc9f0 100644
--- a/src/select.rs
+++ b/src/select.rs
@@ -50,7 +50,7 @@ pub fn select(
             let mut data = yaml_rust::yaml::Hash::new();
 
             for (i, column) in column_names.iter().enumerate() {
-                let column_name = column.to_string();
+                let column_name = column.to_owned();
                 let column_value: Yaml = row.get(i)?;
 
                 data.insert(