mgr/TTLCache: add missing include

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

diff --git a/src/mgr/TTLCache.h b/src/mgr/TTLCache.h
index d29b787bbf6956372bd2ce9b60ac0a028023deba..a6ce6f75eb9e427fbd7c33652fd49cb7d80b2656 100644 (file)
--- a/src/mgr/TTLCache.h
+++ b/src/mgr/TTLCache.h
@@ -5,6 +5,7 @@
 #include <functional>
 #include <map>
 #include <memory>
+#include <sstream>
 #include <string>
 #include <vector>