[sm919][jlq19] Fix higherGlobal to use correct global function

valid/function/higher_order_functions/higherGlobal.wacc

@@ -18,7 +18,7 @@ begin
   end
 
   int{int} f(int{int} d) is
-    return g
+    return h
   end
 
   int{int} x = call f(g);