fixed a bug in the `SpecialOptForce`

1 files changed, 0 insertions, 2 deletions

diff --git a/builtin.h b/builtin.h
index 67b07a7..b3053cd 100644
--- a/builtin.h
+++ b/builtin.h
@@ -163,8 +163,6 @@ class SpecialOptDelay: public SpecialOptObj {/*{{{*/
  * The implementation of `force` operator
  */
 class SpecialOptForce: public SpecialOptObj {/*{{{*/
-    private:
-        PromObj* prom;
     public:
         /** Construct a `force` operator */
         SpecialOptForce();