From d02eb8d00b5beddd1a3e23d7def063e347bcd391 Mon Sep 17 00:00:00 2001
From: Islam AbdelRahman <tec@fb.com>
Date: Mon, 4 Apr 2016 11:10:46 -0700
Subject: [PATCH] Fix unused variable warning

Summary:
My last diff introduced a warning when compiling under release mode
https://reviews.facebook.net/D55539

fix the warning

Test Plan:
DEBUG_LEVEL=0 make db_bench
make check

Reviewers: sdong

Reviewed By: sdong

Subscribers: andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D56295
---
 utilities/write_batch_with_index/write_batch_with_index.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/utilities/write_batch_with_index/write_batch_with_index.cc b/utilities/write_batch_with_index/write_batch_with_index.cc
index 67a369c8b..83b07f4db 100644
--- a/utilities/write_batch_with_index/write_batch_with_index.cc
+++ b/utilities/write_batch_with_index/write_batch_with_index.cc
@@ -459,8 +459,8 @@ void WriteBatchWithIndex::Rep::AddNewEntry(uint32_t column_family_id) {
                           wb_data.size() - last_entry_offset);
   // Extract key
   Slice key;
-  bool success =
-    ReadKeyFromWriteBatchEntry(&entry_ptr, &key, column_family_id != 0);
+  bool success __attribute__((__unused__)) =
+      ReadKeyFromWriteBatchEntry(&entry_ptr, &key, column_family_id != 0);
   assert(success);
 
     auto* mem = arena.Allocate(sizeof(WriteBatchIndexEntry));