Revert "defer db connection close"

en/05.2.md

@@ -39,7 +39,6 @@ The following example shows how to operate on a database based on the `database/
 	
 	func main() {
 	    db, err := sql.Open("mysql", "astaxie:astaxie@/test?charset=utf8")
-	    defer db.Close()
 	    checkErr(err)
 	
 	    // insert
@@ -94,6 +93,7 @@ The following example shows how to operate on a database based on the `database/
 	
 	    fmt.Println(affect)
 	
+	    db.Close()
 	
 	}