Fix missing #include for gcc-11

diff --git a/pdns/lua-record.cc b/pdns/lua-record.cc
index 682759432ad80edae9297eba7aee3fb70d8cc3a6..8d51c7937eddbbf53a21a269310b6035adb4a45c 100644 (file)
--- a/pdns/lua-record.cc
+++ b/pdns/lua-record.cc
@@ -1,3 +1,4 @@
+#include <thread>
 #include <future>
 #include <mutex>
 #include <boost/format.hpp>