nghttpx: Use vector for WorkerEvent queue

src/shrpx_worker.cc

@@ -119,7 +119,7 @@ void Worker::send(const WorkerEvent &event) {
 }
 
 void Worker::process_events() {
-  std::deque<WorkerEvent> q;
+  std::vector<WorkerEvent> q;
   {
     std::lock_guard<std::mutex> g(m_);
     q.swap(q_);

src/shrpx_worker.h

@@ -28,7 +28,6 @@
 #include "shrpx.h"
 
 #include <mutex>
-#include <deque>
 #include <vector>
 #include <thread>
 #ifndef NOTHREADS
@@ -117,7 +116,7 @@ private:
   std::future<void> fut_;
 #endif // NOTHREADS
   std::mutex m_;
-  std::deque<WorkerEvent> q_;
+  std::vector<WorkerEvent> q_;
   ev_async w_;
   ev_timer mcpool_clear_timer_;
   MemchunkPool mcpool_;