Last of the spelling fixed

cde/programs/dtmail/libDtMail/RFC/RFCMailBox.C

@@ -2482,7 +2482,7 @@ RFCMailBox::ThreadNewMailEntry(void * client_data)
     //
     while(info->object_valid->state()) {
 
-	// The following sequence is a little wierd, but here is why.
+	// The following sequence is a little weird, but here is why.
 	// We need to sleep for the ping interval. We can be awaken
 	// early however if the thread catches a signal. The main
 	// thread will send a SIGTERM from the mail box destructor