fix delete question

src/pg_store.rs

@@ -281,14 +281,14 @@ impl Store {
         let delete_question_query = "DELETE FROM questions WHERE id = $1";
         // First, delete any possible question/tag associations
         match sqlx::query(delete_question_tag_query)
-            .bind(id.to_string())
+            .bind(i32::from(id))
             .execute(&self.connection)
             .await
         {
             Ok(_) => {
                 //Now, delete the question
                 match sqlx::query(delete_question_query)
-                    .bind(id.to_string())
+                    .bind(i32::from(id))
                     .execute(&self.connection)
                     .await
                 {