From 48c9e03e076d508a2b99d3a32bf22142773367fd Mon Sep 17 00:00:00 2001
From: Jordan Terrell <jterrell@wans.net>
Date: Mon, 4 Feb 2019 17:02:06 -0600
Subject: [PATCH] Using None instead of iter::empty for open_cf function...

---
 src/db.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/db.rs b/src/db.rs
index 4f155ff..f100158 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -22,7 +22,6 @@ use std::collections::BTreeMap;
 use std::ffi::{CStr, CString};
 use std::fmt;
 use std::fs;
-use std::iter;
 use std::marker::PhantomData;
 use std::ops::Deref;
 use std::path::Path;
@@ -661,7 +660,7 @@ impl DB {
 
     /// Open the database with the specified options.
     pub fn open<P: AsRef<Path>>(opts: &Options, path: P) -> Result<DB, Error> {
-        DB::open_cf(opts, path, iter::empty::<&str>())
+        DB::open_cf(opts, path, None::<&str>)
     }
 
     /// Open a database with the given database options and column family names.