Avoid loplugin:staticmethods in non-debug build

Change-Id: Ieb3f5a50ed0ddc9109dc0ad16caa8a8ac5b16362
diff --git a/vcl/source/edit/textundo.cxx b/vcl/source/edit/textundo.cxx
index 1ba423a..e28387b 100644
--- a/vcl/source/edit/textundo.cxx
+++ b/vcl/source/edit/textundo.cxx
@@ -108,6 +108,7 @@ bool TextUndoManager::Redo()
void TextUndoManager::UndoRedoStart()
{
    DBG_ASSERT( GetView(), "Undo/Redo: Active View?" );
    (void) this; // avoid loplugin:staticmethods
}

void TextUndoManager::UndoRedoEnd()
diff --git a/vcl/source/window/event.cxx b/vcl/source/window/event.cxx
index ec6a9b6..ea819cd 100644
--- a/vcl/source/window/event.cxx
+++ b/vcl/source/window/event.cxx
@@ -295,6 +295,7 @@ void Window::RemoveUserEvent( ImplSVEvent * nUserEvent )
                "Window::RemoveUserEvent(): Event doesn't send to this window or is already removed" );
    DBG_ASSERT( nUserEvent->mbCall,
                "Window::RemoveUserEvent(): Event is already removed" );
    (void) this; // avoid loplugin:staticmethods

    if ( nUserEvent->mpWindow )
    {