8278309: [windows] use of uninitialized OSThread::_state

Reviewed-by: mdoerr
Backport-of: 54993b13078ceb05736bb0e1d7ed7415c390442e

src/hotspot/os/windows/os_windows.cpp

@@ -610,6 +610,9 @@ bool os::create_thread(Thread* thread, ThreadType thr_type,
     return false;
   }
 
+  // Initial state is ALLOCATED but not INITIALIZED
+  osthread->set_state(ALLOCATED);
+
   // Initialize support for Java interrupts
   HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL);
   if (interrupt_event == NULL) {
@@ -701,7 +704,7 @@ bool os::create_thread(Thread* thread, ThreadType thr_type,
   osthread->set_thread_handle(thread_handle);
   osthread->set_thread_id(thread_id);
 
-  // Initial thread state is INITIALIZED, not SUSPENDED
+  // Thread state now is INITIALIZED, not SUSPENDED
   osthread->set_state(INITIALIZED);
 
   // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain