Correct syntax mistake hidden in assert(3)

wait_status cannot be compared with WaitStatus::Stop,
go for wait_status.type.

llvm-svn: 305794

lldb/source/Plugins/Process/NetBSD/NativeProcessNetBSD.cpp

@@ -845,7 +845,7 @@ void NativeProcessNetBSD::SigchldHandler() {
   if (exited)
     MonitorExited(wait_pid, wait_status);
   else {
-    assert(wait_status == WaitStatus::Stop);
+    assert(wait_status.type == WaitStatus::Stop);
     MonitorCallback(wait_pid, wait_status.status);
   }
 }