Remove unused variable

Author: Mark-Simulacrum

src/db/file.rs

@@ -72,7 +72,7 @@ pub fn get_path(conn: &Connection, path: &str) -> Option<Blob> {
 
         let res = match res {
             Ok(r) => r,
-            Err(err) => {
+            Err(_) => {
                 return None;
             }
         };