diff --git a/js/xpconnect/src/XPCJSRuntime.cpp b/js/xpconnect/src/XPCJSRuntime.cpp
index 99666aebb20..f880c7317c1 100644
--- a/js/xpconnect/src/XPCJSRuntime.cpp
+++ b/js/xpconnect/src/XPCJSRuntime.cpp
@@ -680,21 +680,6 @@ xpc_UnmarkSkippableJSHolders()
     }
 }
 
-template<class T> static void
-DoDeferredRelease(nsTArray<T>& array)
-{
-    while (1) {
-        uint32_t count = array.Length();
-        if (!count) {
-            array.Compact();
-            break;
-        }
-        T wrapper = array[count-1];
-        array.RemoveElementAt(count-1);
-        NS_RELEASE(wrapper);
-    }
-}
-
 /* static */ void
 XPCJSRuntime::GCSliceCallback(JSRuntime* rt,
                               JS::GCProgress progress,
@@ -747,10 +732,6 @@ XPCJSRuntime::FinalizeCallback(JSFreeOp* fop,
             MOZ_ASSERT(self->mDoingFinalization, "bad state");
             self->mDoingFinalization = false;
 
-            // Release all the members whose JSObjects are now known
-            // to be dead.
-            DoDeferredRelease(self->mWrappedJSToReleaseArray);
-
             // Sweep scopes needing cleanup
             XPCWrappedNativeScope::KillDyingScopes();
 
@@ -945,7 +926,6 @@ XPCJSRuntime::WeakPointerZoneGroupCallback(JSRuntime* rt, void* data)
     // about to be finalized and update any pointers to moved GC things.
     XPCJSRuntime* self = static_cast<XPCJSRuntime*>(data);
 
-    MOZ_ASSERT(self->WrappedJSToReleaseArray().IsEmpty());
     self->mWrappedJSMap->UpdateWeakPointersAfterGC(self);
 
     XPCWrappedNativeScope::UpdateWeakPointersAfterGC(self);
@@ -3336,7 +3316,6 @@ XPCJSRuntime::XPCJSRuntime(nsXPConnect* aXPConnect)
    mDyingWrappedNativeProtoMap(XPCWrappedNativeProtoMap::newMap(XPC_DYING_NATIVE_PROTO_MAP_LENGTH)),
    mDetachedWrappedNativeProtoMap(XPCWrappedNativeProtoMap::newMap(XPC_DETACHED_NATIVE_PROTO_MAP_LENGTH)),
    mGCIsRunning(false),
-   mWrappedJSToReleaseArray(),
    mNativesToReleaseArray(),
    mDoingFinalization(false),
    mVariantRoots(nullptr),
@@ -3675,10 +3654,6 @@ XPCJSRuntime::DebugDump(int16_t depth)
         XPC_LOG_INDENT();
         XPC_LOG_ALWAYS(("mJSRuntime @ %x", Runtime()));
 
-        XPC_LOG_ALWAYS(("mWrappedJSToReleaseArray @ %x with %d wrappers(s)",
-                        &mWrappedJSToReleaseArray,
-                        mWrappedJSToReleaseArray.Length()));
-
         int cxCount = 0;
         JSContext* iter = nullptr;
         while (JS_ContextIterator(Runtime(), &iter))
diff --git a/js/xpconnect/src/XPCMaps.cpp b/js/xpconnect/src/XPCMaps.cpp
index 0437c056cb3..297e9776ce7 100644
--- a/js/xpconnect/src/XPCMaps.cpp
+++ b/js/xpconnect/src/XPCMaps.cpp
@@ -88,14 +88,9 @@ void
 JSObject2WrappedJSMap::UpdateWeakPointersAfterGC(XPCJSRuntime* runtime)
 {
     // Check all wrappers and update their JSObject pointer if it has been
-    // moved, or if it is about to be finalized queue the wrapper for
-    // destruction by adding it to an array held by the runtime.
-    // Note that we do not want to be changing the refcount of these wrappers.
-    // We add them to the array now and Release the array members later to avoid
-    // the posibility of doing any JS GCThing allocations during the gc cycle.
-
-    nsTArray<nsXPCWrappedJS*>& dying = runtime->WrappedJSToReleaseArray();
+    // moved. Release any wrappers whose weakly held JSObject has died.
 
+    nsTArray<RefPtr<nsXPCWrappedJS>> dying;
     for (Map::Enum e(mTable); !e.empty(); e.popFront()) {
         nsXPCWrappedJS* wrapper = e.front().value();
         MOZ_ASSERT(wrapper, "found a null JS wrapper!");
@@ -117,7 +112,7 @@ JSObject2WrappedJSMap::UpdateWeakPointersAfterGC(XPCJSRuntime* runtime)
             if (wrapper->IsSubjectToFinalization()) {
                 wrapper->UpdateObjectPointerAfterGC();
                 if (!wrapper->GetJSObjectPreserveColor())
-                    dying.AppendElement(wrapper);
+                    dying.AppendElement(dont_AddRef(wrapper));
             }
             wrapper = wrapper->GetNextWrapper();
         }
diff --git a/js/xpconnect/src/xpcprivate.h b/js/xpconnect/src/xpcprivate.h
index fc0c384e4bb..8ddef8749b5 100644
--- a/js/xpconnect/src/xpcprivate.h
+++ b/js/xpconnect/src/xpcprivate.h
@@ -612,8 +612,6 @@ public:
 
     PRTime GetWatchdogTimestamp(WatchdogTimestampCategory aCategory);
 
-    nsTArray<nsXPCWrappedJS*>& WrappedJSToReleaseArray() { return mWrappedJSToReleaseArray; }
-
 private:
     XPCJSRuntime() = delete;
     explicit XPCJSRuntime(nsXPConnect* aXPConnect);
@@ -639,7 +637,6 @@ private:
     XPCWrappedNativeProtoMap* mDyingWrappedNativeProtoMap;
     XPCWrappedNativeProtoMap* mDetachedWrappedNativeProtoMap;
     bool mGCIsRunning;
-    nsTArray<nsXPCWrappedJS*> mWrappedJSToReleaseArray;
     nsTArray<nsISupports*> mNativesToReleaseArray;
     bool mDoingFinalization;
     XPCRootSetElem* mVariantRoots;