avmediaogl: call gltf_renderer_set_content() only once

Change-Id: Ic4c4b886f5a60508e4f62eb3396850d09ae5d0a0

avmedia/source/opengl/oglplayer.cxx

@@ -211,6 +211,7 @@ uno::Reference< media::XPlayerWindow > SAL_CALL OGLPlayer::createPlayerWindow( c
     m_pHandle->viewport.y = 0;
     m_pHandle->viewport.width = aSize.Width();
     m_pHandle->viewport.height = aSize.Height();
+    gltf_renderer_set_content(m_pHandle);
     OGLWindow* pWindow = new OGLWindow(m_pHandle, &m_aContext, pChildWindow);
     return uno::Reference< media::XPlayerWindow >( pWindow );
 }

avmedia/source/opengl/oglwindow.cxx

@@ -30,7 +30,6 @@ OGLWindow::~OGLWindow()
 void SAL_CALL OGLWindow::update() throw (css::uno::RuntimeException, std::exception)
 {
     m_pContext->makeCurrent();
-    gltf_renderer_set_content(m_pHandle);
     gltf_prepare_renderer(m_pHandle);
     gltf_renderer(m_pHandle);
     gltf_complete_renderer();