From dbd3aba5272012e16d66d6bc80a7cd653b8c8dbe Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Mon, 17 Feb 2020 17:55:29 -0800
Subject: [PATCH] Core: Fix crash modifying hash table entry (fixes #1673)

---
 CHANGES          | 1 +
 src/util/table.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 3bae6140c..edabaf425 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,7 @@
 0.8.2: (Future)
 Other fixes:
  - Core: Fix ELF loading regression (fixes mgba.io/i/1669)
+ - Core: Fix crash modifying hash table entry (fixes mgba.io/i/1673)
 
 0.8.1: (2020-02-16)
 Emulation fixes:
diff --git a/src/util/table.c b/src/util/table.c
index 20f4e159b..f4a85557f 100644
--- a/src/util/table.c
+++ b/src/util/table.c
@@ -187,7 +187,9 @@ void HashTableInsert(struct Table* table, const char* key, void* value) {
 	struct TableList* list;
 	TABLE_LOOKUP_START(HASH_TABLE_COMPARATOR, list, hash) {
 		if (value != lookupResult->value) {
-			table->deinitializer(lookupResult->value);
+			if (table->deinitializer) {
+				table->deinitializer(lookupResult->value);
+			}
 			lookupResult->value = value;
 		}
 		return;