NOBUG Use the skipping logic of segment postings in

src/query/term_query/term_scorer.rs

@@ -1,5 +1,6 @@
 use Score;
 use DocId;
+use postings::SkipResult;
 use fastfield::U64FastFieldReader;
 use postings::DocSet;
 use query::Scorer;
@@ -39,6 +40,10 @@ where
     fn size_hint(&self) -> usize {
         self.postings.size_hint()
     }
+
+    fn skip_next(&mut self, target: DocId) -> SkipResult {
+        self.postings.skip_next(target)
+    }
 }
 
 impl<TPostings> Scorer for TermScorer<TPostings>