Added errprs.

src/data/mod.rs

@@ -33,7 +33,7 @@ impl Table {
             None => {
                 self.fields.insert(name.to_string(), FieldDef::new());
                 Ok(())
-            },
+            }
         }
     }
 }
@@ -61,7 +61,7 @@ mod table {
         tbl.add_field("one", "id");
         match tbl.add_field("one", "id") {
             Ok(_) => unreachable!(" Should not duplicates."),
-            Err(_) => {},
+            Err(_) => {}
         }
     }
 }