Eval handles Undefined and Function in switch to avoid compiler warning.

src/ccmeta.leg

@@ -3,7 +3,7 @@
 # Copyright (c) 2016-2021 Ian Piumarta and other contributors (see AUTHORS)
 # All rights reserved (see LICENSE)
 #
-# Last edited: 2022-09-30 16:23:05 by piumarta on zora-10.local
+# Last edited: 2023-03-22 16:11:40 by piumarta on zora-10.local
 
 %{
 /* compile:	leg -o ccmeta.c ccmeta.leg
@@ -3357,6 +3357,9 @@ oop eval(oop scope, oop ast)
     DO_C_PROTOS();
     break;
 #undef  _DO
+        case t_Undefined:
+        case t_Function:
+            break;
     }
     printf("EVAL ");
     println(ast);