Fix FreeList::zapFreedMemory to fail "use-of-uninitialized-value" on MSAN

Source/platform/heap/Heap.cpp

Index: Source/platform/heap/Heap.cpp
diff --git a/Source/platform/heap/Heap.cpp b/Source/platform/heap/Heap.cpp
index 019253b8ec77d919e7192143a3d661126d37134e..92ab2bbe1497a2add57f62cabbed4200dc956eaf 100644
--- a/Source/platform/heap/Heap.cpp
+++ b/Source/platform/heap/Heap.cpp
@@ -1168,8 +1168,9 @@ void FreeList::addToFreeList(Address address, size_t size)
         m_biggestFreeListIndex = index;
 }
 
-#if ENABLE(ASSERT) || defined(LEAK_SANITIZER) || defined(ADDRESS_SANITIZER)
+#if ENABLE(ASSERT) || defined(LEAK_SANITIZER) || defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER)
 NO_SANITIZE_ADDRESS
+NO_SANITIZE_MEMORY
 void NEVER_INLINE FreeList::zapFreedMemory(Address address, size_t size)
 {
     for (size_t i = 0; i < size; i++) {