1 files changed, 1 insertions, 3 deletions
diff --git a/db/skiplist.h b/db/skiplist.h
index a59b45b..1140e59 100644
--- a/db/skiplist.h
+++ b/db/skiplist.h
@@ -36,8 +36,6 @@
 
 namespace leveldb {
 
-class Arena;
-
 template <typename Key, class Comparator>
 class SkipList {
  private:
@@ -243,7 +241,7 @@ int SkipList<Key, Comparator>::RandomHeight() {
   // Increase height with probability 1 in kBranching
   static const unsigned int kBranching = 4;
   int height = 1;
-  while (height < kMaxHeight && ((rnd_.Next() % kBranching) == 0)) {
+  while (height < kMaxHeight && rnd_.OneIn(kBranching)) {
     height++;
   }
   assert(height > 0);