-Werror,-Wuninitialized

(in DummyRenderer ctor: base class 'comphelper::OBaseMutex' is
uninitialized when used here to access 'comphelper::OBaseMutex::m_aMutex')

Change-Id: I5b151176c676a58593933b3f2e33a3e2dfdcc630

slideshow/source/engine/shapes/gdimtftools.cxx

@@ -107,9 +107,7 @@ namespace {
 
 typedef ::cppu::WeakComponentImplHelper1< graphic::XGraphicRenderer > DummyRenderer_Base;
 
-class DummyRenderer :
-        public DummyRenderer_Base,
-        public cppu::BaseMutex
+class DummyRenderer: public cppu::BaseMutex, public DummyRenderer_Base
 {
 public:
     DummyRenderer() :