issue #210 LEN on any value other than array or table should be any type

src/lcode.c

@@ -1285,6 +1285,9 @@ static void codeunexpval (FuncState *fs, OpCode op, expdesc *e, int line) {
       luaK_codeABC(fs, OP_RAVI_TOINT, e->u.info, 0, 0);
       e->ravi_type = RAVI_TNUMINT;
     }
+    else {
+      e->ravi_type = RAVI_TANY;
+    }
   }
   luaK_fixline(fs, line);
 }