fixed bug that part of menu sometimes remains after closing

coreengine/viewdisplaymenu.c

@@ -557,6 +557,7 @@ void cViewMenu::Close(void) {
     }
     UnScaleTv();
     ClearVariables();
+    sdOsd.Flush();
     sdOsd.DeleteOsd();
 }
 

coreengine/viewelement.c

@@ -308,6 +308,10 @@ void cViewElement::WakeUp(void) {
 void cViewElement::Close(void) {
     delete detacher;
     detacher = NULL;
+    delete fader;
+    fader = NULL;
+    delete shifter;
+    shifter = NULL;
     StopScrolling();
     for (cAreaNode *node = areaNodes.First(); node; node = areaNodes.Next(node)) {
         node->StopBlinkers();