Ensure the recipe preview image is displayed when switching to the food menu. This patch corrects a cosmetic bug which left the recipe preview image (the pulsating icon showing the result of cooking) invisible when switching to the menu page with ingredients already selected.

--- a/Aquaria/Game.cpp	Thu Jan 06 01:20:39 2011 +0900
+++ b/Aquaria/Game.cpp	Thu Jan 06 01:26:23 2011 +0900
@@ -9267,6 +9267,7 @@
 		circlePageNum->alpha = 1;
 
 		previewRecipe->alpha = 0;
+		updatePreviewRecipe();
 	}
 	else if (!f && foodMenu)
 	{