common/Journald: add missing include

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>

diff --git a/src/common/Journald.cc b/src/common/Journald.cc
index 164b65834a64973d8356cb7c086415dbfb381d88..12e1a97e99837b6572d75da1fa9cea1555fbb9a5 100644 (file)
--- a/src/common/Journald.cc
+++ b/src/common/Journald.cc
@@ -14,6 +14,9 @@
 #include <sys/un.h>
 #include <syslog.h>
 #include <unistd.h>
+
+#include <iostream> // for std::cerr
+
 #include <fmt/format.h>
 #include <fmt/ostream.h>
 
@@ -23,7 +26,6 @@
 #include "log/SubsystemMap.h"
 #include "msg/msg_fmt.h"
 
-
 namespace ceph::logging {
 
 namespace {