fix

src/core/lib/event_engine/forkable.cc

@@ -43,6 +43,7 @@ bool IsForkEnabled() {
 void ObjectGroupForkHandler::RegisterForkable(
     std::shared_ptr<Forkable> forkable, GRPC_UNUSED void (*prepare)(void),
     GRPC_UNUSED void (*parent)(void), GRPC_UNUSED void (*child)(void)) {
+  if (IsForkEnabled()) {
     GPR_ASSERT(!is_forking_);
     forkables_.emplace_back(forkable);
 #ifdef GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK
@@ -51,6 +52,7 @@ void ObjectGroupForkHandler::RegisterForkable(
     }
 #endif  // GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK
   }
+}
 
 void ObjectGroupForkHandler::Prefork() {
   if (IsForkEnabled()) {