coverity#982921 do not leak

Change-Id: I7f40b7e72caa67644b23f02fa6c2a4ccfe4f354d

canvas/source/cairo/cairo_canvashelper_text.cxx

@@ -332,7 +332,7 @@ namespace cairocanvas
             OSL_TRACE(":cairocanvas::CanvasHelper::drawText(O,t,f,v,r,d): %s", OUStringToOString( text.Text.copy( text.StartPosition, text.Length ),
                                                                                                          RTL_TEXTENCODING_UTF8 ).getStr());
 
-            TextLayout* pTextLayout = new TextLayout(text, textDirection, 0, CanvasFont::Reference(dynamic_cast< CanvasFont* >( xFont.get() )), mpSurfaceProvider);
+            rtl::Reference< TextLayout > pTextLayout( new TextLayout(text, textDirection, 0, CanvasFont::Reference(dynamic_cast< CanvasFont* >( xFont.get() )), mpSurfaceProvider) );
             pTextLayout->draw( mpSurface, *mpVirtualDevice, aOutpos, viewState, renderState );
         }