[PATCH BlueZ 3/4] shared/queue: Fix warning when compiling ad.c

[Bastien Nocera <hadess@hadess.net>]

Both ad.c and eir.h include queue.h as both use the struct declared in
this header. Quiet the warnings with a stanza that means it will be
ignored second time around.
---
 src/shared/queue.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/shared/queue.h b/src/shared/queue.h
index 5ea7ce4fd768..3a2dc407d91b 100644
--- a/src/shared/queue.h
+++ b/src/shared/queue.h
@@ -8,6 +8,8 @@
  *
  */
 
+#pragma once
+
 #include <stdbool.h>
 
 typedef void (*queue_destroy_func_t)(void *data);
-- 
2.53.0