fix missing include

struct timeval wasn't available, probably depending on libknot version,
breaking e.g. the Docker build.

diff --git a/lib/cache.h b/lib/cache.h
index 66c6cdb014ef9c1ce28dea340302d2f0e6036f90..00f2971ade4b7fffc1f376c123d2db35b9e0fdc9 100644 (file)
--- a/lib/cache.h
+++ b/lib/cache.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <libknot/rrset.h>
+#include <sys/time.h>
 #include "lib/cdb.h"
 #include "lib/defines.h"
 #include "contrib/ucw/config.h" /*uint*/