notmuch_filenames_create: Take a reference to underlying filename list

The notmuch_filenames_t object might easily outlive the original object
owning the filename list. So take a talloc reference to keep things safe.

diff --git a/lib/filenames.c b/lib/filenames.c
index 50e1435488d04ae5c5bd59faa9f451a4dfba5d8f..f078c95579c9fabbb1c54f101de809386130f85a 100644 (file)
--- a/lib/filenames.c
+++ b/lib/filenames.c
@@ -79,6 +79,7 @@ _notmuch_filenames_create (const void *ctx,
        return NULL;
 
     filenames->iterator = list->head;
+    (void) talloc_reference (filenames, list);
 
     return filenames;
 }