Add: add time bonus if all meat was welldone

src/game/lib/stage_timer.js

@@ -82,6 +82,9 @@ StageTimer.prototype.addTime = function(timeSec) {
 }
 
 StageTimer.prototype.addBonusTime = function(timeSec) {
+	if(timeSec == 0)
+		return;
+
 	this.addTime(timeSec);
 
 	game.world.bringToTop(this.bonusTimeText);