From b005f9693768a4a33eb5e108f43242cba1e4ecb5 Mon Sep 17 00:00:00 2001
From: rockeet <rockeet@gmail.com>
Date: Wed, 23 Sep 2020 09:51:27 -0700
Subject: [PATCH] db_iter.cc: DBIter::Next(): minor improve (#7407)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/7407

Reviewed By: ajkr

Differential Revision: D23817122

Pulled By: jay-zhuang

fbshipit-source-id: 62bf43e4d780fad8c682edd750b4800b5b8f4a77
---
 db/db_iter.cc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/db/db_iter.cc b/db/db_iter.cc
index 8f79b5cf3..dc8f7f0f6 100644
--- a/db/db_iter.cc
+++ b/db/db_iter.cc
@@ -147,13 +147,13 @@ void DBIter::Next() {
 
   local_stats_.next_count_++;
   if (ok && iter_.Valid()) {
-    Slice prefix;
     if (prefix_same_as_start_) {
       assert(prefix_extractor_ != nullptr);
-      prefix = prefix_.GetUserKey();
+      const Slice prefix = prefix_.GetUserKey();
+      FindNextUserEntry(true /* skipping the current user key */, &prefix);
+    } else {
+      FindNextUserEntry(true /* skipping the current user key */, nullptr);
     }
-    FindNextUserEntry(true /* skipping the current user key */,
-                      prefix_same_as_start_ ? &prefix : nullptr);
   } else {
     is_key_seqnum_zero_ = false;
     valid_ = false;