#753: RecipeIterator#hasNext will now accurately represent if the current iterator has a next item.

src/main/java/org/bukkit/craftbukkit/inventory/RecipeIterator.java

@@ -19,13 +19,23 @@ public class RecipeIterator implements Iterator<Recipe> {
 
     @Override
     public boolean hasNext() {
-        return (current != null && current.hasNext()) || recipes.hasNext();
+        if (current != null && current.hasNext()) {
+            return true;
+        }
+
+        if (recipes.hasNext()) {
+            current = recipes.next().getValue().values().iterator();
+            return hasNext();
+        }
+
+        return false;
     }
 
     @Override
     public Recipe next() {
         if (current == null || !current.hasNext()) {
             current = recipes.next().getValue().values().iterator();
+            return next();
         }
 
         return current.next().toBukkitRecipe();