[heap] Fix check in concurrent marking when flushing bytecode

There was a negation missing in the check.

Bug: chromium:948559
Change-Id: I54cfdd8b83771d80aebe506e4c2793cef301e48b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1549164
Auto-Submit: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60578}

src/heap/concurrent-marking.cc

@@ -407,7 +407,7 @@ class ConcurrentMarkingVisitor final
     int size = VisitJSObjectSubclass(map, object);
 
     // Check if the JSFunction needs reset due to bytecode being flushed.
-    if (bytecode_flush_mode_ == BytecodeFlushMode::kDoNotFlushBytecode &&
+    if (bytecode_flush_mode_ != BytecodeFlushMode::kDoNotFlushBytecode &&
         object->NeedsResetDueToFlushedBytecode()) {
       weak_objects_->flushed_js_functions.Push(task_id_, object);
     }