Don't crash if no loading screens are found

apps/openmw/mwgui/loadingscreen.cpp

@@ -226,9 +226,14 @@ namespace MWGui
             if (start == "splash")
                 splash.push_back (*it);
         }
+        if (splash.size())
+        {
             std::string randomSplash = splash[rand() % splash.size()];
 
             Ogre::TexturePtr tex = Ogre::TextureManager::getSingleton ().load (randomSplash, "General");
             mBackgroundImage->setImageTexture (randomSplash);
         }
+        else
+            std::cerr << "No loading screens found!" << std::endl;
+    }
 }