Missing include

include/ProxySQL_Statistics.hpp

@@ -4,7 +4,7 @@
 #include "cpp.h"
 //#include "thread.h"
 //#include "wqueue.h"
-
+#include <vector>
 
 #define STATSDB_SQLITE_TABLE_MYSQL_CONNECTIONS "CREATE TABLE mysql_connections (timestamp INT NOT NULL, Client_Connections_aborted INT NOT NULL, Client_Connections_connected INT NOT NULL, Client_Connections_created INT NOT NULL, Server_Connections_aborted INT NOT NULL, Server_Connections_connected INT NOT NULL, Server_Connections_created INT NOT NULL, ConnPool_get_conn_failure INT NOT NULL, ConnPool_get_conn_immediate INT NOT NULL, ConnPool_get_conn_success INT NOT NULL, Questions INT NOT NULL, Slow_queries INT NOT NULL, PRIMARY KEY (timestamp))"