8214936: assert(_needs_refill == 0) failed: Forgot to handle a failed IC transition requiring IC stubs

Reviewed-by: kvn, thartmann, pliden

src/hotspot/share/runtime/thread.cpp

@@ -231,6 +231,7 @@ Thread::Thread() {
   set_active_handles(NULL);
   set_free_handle_block(NULL);
   set_last_handle_mark(NULL);
+  DEBUG_ONLY(_missed_ic_stub_refill_mark = NULL);
 
   // This initial value ==> never claimed.
   _oops_do_parity = 0;