[PATCH wayland] wayland-client : Fix duplicated proxy destroy

[Elvis Lee]

proxy_destroy can be called twice by wl_proxy_destroy and wl_event_queue_release.
In that case, wl_map_remove should be called only once for same object id.

Signed-off-by: Elvis Lee <kwangwoong.lee at lge.com>
---
 src/wayland-client.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/wayland-client.c b/src/wayland-client.c
index 6450b67..b087ed3 100644
--- a/src/wayland-client.c
+++ b/src/wayland-client.c
@@ -405,6 +405,9 @@ wl_proxy_create_for_id(struct wl_proxy *factory,
 void
 proxy_destroy(struct wl_proxy *proxy)
 {
+	if (proxy->flags & WL_PROXY_FLAG_DESTROYED)
+		goto unreference;
+
 	if (proxy->flags & WL_PROXY_FLAG_ID_DELETED)
 		wl_map_remove(&proxy->display->objects, proxy->object.id);
 	else if (proxy->object.id < WL_SERVER_ID_START)
@@ -417,6 +420,7 @@ proxy_destroy(struct wl_proxy *proxy)
 
 	proxy->flags |= WL_PROXY_FLAG_DESTROYED;
 
+unreference:
 	proxy->refcount--;
 	if (!proxy->refcount)
 		free(proxy);
-- 
1.7.9.5