mem leak in OutDevStackState

regression since cf3c6cb4

Change-Id: I74900c93a1aee87e7ae0a6fa58905f751a528756

vcl/source/outdev/outdev.cxx

@@ -206,6 +206,7 @@ OutputDevice::~OutputDevice()
             mpOutDevStateStack->pop_back();
         }
     }
+    delete mpOutDevStateStack;
 
     // release the active font instance
     if( mpFontEntry )
@@ -213,11 +214,9 @@ OutputDevice::~OutputDevice()
 
     // remove cached results of GetDevFontList/GetDevSizeList
     // TODO: use smart pointers for them
-    if( mpGetDevFontList )
-        delete mpGetDevFontList;
+    delete mpGetDevFontList;
 
-    if( mpGetDevSizeList )
-        delete mpGetDevSizeList;
+    delete mpGetDevSizeList;
 
     // release ImplFontCache specific to this OutputDevice
     // TODO: refcount ImplFontCache