sqlite::Zero: Change to unit struct syntax

Found some documentation that reminded me how unit structs are written.
Change this definition as that makes more sense.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/sqlite.rs b/src/sqlite.rs
index d241053..bb2c5bb 100644
--- a/src/sqlite.rs
+++ b/src/sqlite.rs
@@ -37,7 +37,7 @@ pub fn affinity(type_name: &str) -> rusqlite::types::Type {
 
 
 #[derive(Debug)]
-pub struct Zero {}
+pub struct Zero;
 
 
 pub fn get_column_names(