coverity#1257110 Big parameter passed by value

and

coverity#1186125 Big parameter passed by value

Change-Id: I6cb6863645647edf4fba114059195582679c30c4

slideshow/source/engine/shapes/drawshape.cxx

@@ -168,6 +168,7 @@ namespace slideshow
             }
 
             // redraw all view shapes, by calling their update() method
+            ViewShape::RenderArgs renderArgs( getViewRenderArgs() );
             if( ::std::count_if( maViewShapes.begin(),
                                  maViewShapes.end(),
                                  ::boost::bind<bool>(
@@ -178,7 +179,7 @@ namespace slideshow
                                                                              // the extra mem_fn. WTF.
                                      _1,
                                      ::boost::cref( mpCurrMtf ),
-                                     getViewRenderArgs(),
+                                     ::boost::cref( renderArgs ),
                                      nUpdateFlags,
                                      isVisible() ) )
                 != static_cast<ViewShapeVector::difference_type>(maViewShapes.size()) )