Fix leftover NeverJoin

Summary: D22817425 forgot to remove `NeverJoin`. Strange that CI didn't detect it :(

Reviewed By: mityal

Differential Revision: D22839452

fbshipit-source-id: dba7b078a

infer/src/absint/AbstractInterpreter.ml

@@ -184,10 +184,7 @@ struct
   let exec_instr pre_disjuncts analysis_data node instr =
     List.foldi pre_disjuncts ~init:[] ~f:(fun i post_disjuncts pre_disjunct ->
         let should_skip =
-          match DConfig.join_policy with
+          let (`UnderApproximateAfter n) = DConfig.join_policy in
-          | `NeverJoin ->
-              false
-          | `UnderApproximateAfter n ->
           List.length post_disjuncts >= n
         in
         if should_skip then (