Bug 1570161 - do not attempt to mark things gray if they cannot be marked gray r=jonco

Differential Revision: https://phabricator.services.mozilla.com/D41468

--HG--
extra : moz-landing-system : lando

js/src/gc/Marking.cpp

@@ -2582,8 +2582,11 @@ void GCMarker::delayMarkingChildren(Cell* cell) {
     markLaterArenas++;
 #endif
   }
-  if (!arena->hasDelayedMarking(color)) {
-    arena->setHasDelayedMarking(color, true);
+  JS::TraceKind kind = MapAllocToTraceKind(arena->getAllocKind());
+  MarkColor colorToMark =
+      TraceKindCanBeMarkedGray(kind) ? color : MarkColor::Black;
+  if (!arena->hasDelayedMarking(colorToMark)) {
+    arena->setHasDelayedMarking(colorToMark, true);
     delayedMarkingWorkAdded = true;
   }
 }