From 1c2352f0dd02753a3476871cec0dbb6a4b032064 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Wed, 25 Jul 2018 16:32:52 +0200
Subject: [PATCH] Make emptyDb() change introduced in #4852 simpler to read.

---
 src/db.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/db.c b/src/db.c
index 39686f1b..a2890639 100644
--- a/src/db.c
+++ b/src/db.c
@@ -337,10 +337,15 @@ long long emptyDb(int dbnum, int flags, void(callback)(void*)) {
         return -1;
     }
 
-    int j = dbnum == -1 ? 0 : dbnum;
-    int dbmax = dbnum == -1 ? server.dbnum : dbnum+1;
+    int startdb, enddb;
+    if (dbnum == -1) {
+        startdb = 0;
+        enddb = server.dbnum-1;
+    } else {
+        startdb = enddb = dbnum;
+    }
 
-    for (; j < dbmax; j++) {
+    for (int j = startdb; j <= enddb; j++) {
         if (dbnum != -1 && dbnum != j) continue;
         removed += dictSize(server.db[j].dict);
         if (async) {