From 1f1f5bdc917acfb0109d1647be35ab9e69344ff4 Mon Sep 17 00:00:00 2001
From: John Sully <john@csquare.ca>
Date: Sun, 14 Mar 2021 03:22:10 +0000
Subject: [PATCH] Avoid queuing null pointers to be freed

Former-commit-id: f50541d437cd1d98139c29407bb3fb4d6ce17fca
---
 src/snapshot.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/snapshot.cpp b/src/snapshot.cpp
index 8a593d4a9..581e2f648 100644
--- a/src/snapshot.cpp
+++ b/src/snapshot.cpp
@@ -403,7 +403,8 @@ void redisDbPersistentData::endSnapshot(const redisDbPersistentDataSnapshot *psn
         }
         
         // Delete the object from the source dict, we don't use dictDelete to avoid a second search
-        splazy->vecde.push_back(deSnapshot);
+        if (deSnapshot != nullptr)
+            splazy->vecde.push_back(deSnapshot);
         *dePrev = deSnapshot->next;
         ht->used--;
     }