Fix bug: "if (renderer_.expired())" -> "if (!renderer_.expired())"
Fix bug: "if (renderer_.expired())" -> "if (!renderer_.expired())"

AlphaStaxLLC/tundra,pharos3d/tundra,BogusCurry/tundra,antont/tundra,antont/tundra,AlphaStaxLLC/tundra,realXtend/tundra,AlphaStaxLLC/tundra,jesterKing/naali,jesterKing/naali,pharos3d/tundra,pharos3d/tundra,antont/tundra,jesterKing/naali,jesterKing/naali,realXtend/tundra,realXtend/tundra,BogusCurry/tundra,jesterKing/naali,realXtend/tundra,antont/tundra,antont/tundra,BogusCurry/tundra,antont/tundra,pharos3d/tundra,AlphaStaxLLC/tundra,BogusCurry/tundra,pharos3d/tundra,jesterKing/naali,antont/tundra,realXtend/tundra,jesterKing/naali,realXtend/tundra,AlphaStaxLLC/tundra,BogusCurry/tundra,BogusCurry/tundra,pharos3d/tundra,AlphaStaxLLC/tundra