acl plugin: avoid "'struct stat' declared inside parameter list" warning

diff --git a/src/plugins/acl/acl-api.h b/src/plugins/acl/acl-api.h
index 4f909c03da4a9294e02dd86ea045d3189416133c..7b19a98ec94528c20dd2850f990662cdbcec55e7 100644 (file)
--- a/src/plugins/acl/acl-api.h
+++ b/src/plugins/acl/acl-api.h
@@ -1,6 +1,8 @@
 #ifndef ACL_API_H
 #define ACL_API_H
 
+#include <sys/stat.h>
+
 struct mailbox_list;
 struct mail_storage;
 struct mailbox;