Fix build errors.

src/core/lib/iomgr/poller/eventmanager_libuv.cc

@@ -27,7 +27,7 @@ grpc::experimental::LibuvEventManager::Options::Options(int num_workers)
     : num_workers_(num_workers) {}
 
 grpc::experimental::LibuvEventManager::LibuvEventManager(const Options& options)
-    : options_(options) {
+    : options_(options), should_stop_(false), shutdown_refcount_(0) {
   int num_workers = options_.num_workers();
   // Number of workers can't be 0 if we do not accept thread donation.
   // TODO(guantaol): replaces the hard-coded number with a flag.

src/core/lib/iomgr/poller/eventmanager_libuv.h

@@ -71,9 +71,9 @@ class LibuvEventManager {
 
   const Options options_;
   // Whether the EventManager workers should be stopped.
-  grpc_core::Atomic<bool> should_stop_ = false;
+  grpc_core::Atomic<bool> should_stop_;
   // A refcount preventing the EventManager from shutdown.
-  grpc_core::Atomic<int> shutdown_refcount_ = 0;
+  grpc_core::Atomic<int> shutdown_refcount_;
   // Worker threads of the EventManager.
   std::vector<grpc_core::Thread> workers_;
 };

test/core/iomgr/poller/eventmanager_libuv_test.cc

@@ -58,8 +58,7 @@ TEST(LibuvEventManager, ShutdownRefAsync) {
     for (int j = 0; j < i; j++) {
       em->ShutdownRef();
     }
-    grpc_core::Thread deleter(
+    grpc_core::Thread deleter("deleter", [em](void*) { delete em; }, nullptr);
-        "deleter", [em](void*) { delete em; }, nullptr);
     deleter.Start();
     gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(1));
     for (int j = 0; j < i; j++) {