Some clang fixes

src/Formatter.hh

@@ -30,7 +30,7 @@
 
 namespace quarkdb {
 
-class RaftEntry;
+struct RaftEntry;
 class RedisRequest;
 
 class Formatter {

src/raft/RaftDispatcher.hh

@@ -39,7 +39,7 @@ namespace quarkdb {
 class RaftJournal; class RaftState; class RaftClock; class RaftWriteTracker;
 class RaftReplicator;
 
-class RaftStateSnapshot;
+struct RaftStateSnapshot;
 using RaftStateSnapshotPtr = std::shared_ptr<const RaftStateSnapshot>;
 
 class RaftDispatcher : public Dispatcher {

src/redis/MultiHandler.hh

@@ -46,7 +46,6 @@ public:
 private:
   MultiOp multiOp;
   bool activated = false;
-  bool execAbort = false;
   bool phantom = false;
 };
 

test/e2e.cc

@@ -818,7 +818,6 @@ private:
 
   std::promise<void> prom;
   std::future<void> flag;
-  size_t counter;
   bool isOk = true;
   qclient::QClient &qcl;
 };