Fix NullEvent and TransportEvent processing bug in SDL port

- Fix kidmNullEvent / base::kidmNullEvent issue
- Fix kidmTransportEvent / base::kidmTransportEvent issue

game/sdl/host.cpp

@@ -286,11 +286,11 @@ bool ProcessMessage(base::Message *pmsg, Event *pevt)
 {
     memset(pevt, sizeof(*pevt), 0);
     switch (pmsg->id) {
-    case kidmNullEvent:
+    case base::kidmNullEvent:
         pevt->eType = nullEvent;
         break;
 
-    case kidmTransportEvent:
+    case base::kidmTransportEvent:
         pevt->eType = transportEvent;
         break;
 

game/sdl/sysmessages.h

@@ -6,8 +6,6 @@ namespace wi {
 enum {
     kidmAppTerminate = 1,
     kidmBreakEvent,
-    kidmNullEvent,
-    kidmTransportEvent,
     kidmAnimationTimer,
     kidmDestroyAfterAnimation,
     kidmAppSetFocus,