save on memory and only load title.png if Options.tile_title_screen is true.
Also: delete m_region_title once the title screen was shown.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@10376 c06c8d41-db1a-0410-9941-cceddc491573
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m_layers[LAYER_TITLE].m_regions.push_back(m_region_title);
// Only initialize title region if we'll actually want to draw it.
if (Options.tile_title_screen)
{
m_region_title = new TitleRegion(m_windowsz.x, m_windowsz.y);
m_layers[LAYER_TITLE].m_regions.push_back(m_region_title);
}