Index: /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIFrameBuffer.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIFrameBuffer.cpp	(revision 51693)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIFrameBuffer.cpp	(revision 51694)
@@ -273,5 +273,6 @@
     Q_UNUSED(uWidth);
     Q_UNUSED(uHeight);
-    Q_UNUSED(image);
+    Q_UNUSED(image); // by ComSafeArrayIn
+    Q_UNUSED(imageSize); // by ComSafeArrayIn
     return E_NOTIMPL;
 }