[wing] fix build warnings

[Silvio Lazzeretti <silviol src gnome org>]

commit 935eeb48ca276fd74ff2e4d41d3ef2016069c261
Author: Silvio Lazzeretti <silviola amazon com>
Date:   Wed Dec 5 10:04:53 2018 +0100

    fix build warnings

 wing/wingnamedpipeclient.c   | 2 +-
 wing/wingnamedpipelistener.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/wing/wingnamedpipeclient.c b/wing/wingnamedpipeclient.c
index 020856f..3150abe 100644
--- a/wing/wingnamedpipeclient.c
+++ b/wing/wingnamedpipeclient.c
@@ -387,6 +387,6 @@ wing_named_pipe_client_set_use_iocp (WingNamedPipeClient *client,
   if (priv->use_iocp != use_iocp)
     {
       priv->use_iocp = use_iocp;
-      g_object_notify_by_pspec (client, props[PROP_USE_IOCP]);
+      g_object_notify_by_pspec (G_OBJECT (client), props[PROP_USE_IOCP]);
     }
 }
diff --git a/wing/wingnamedpipelistener.c b/wing/wingnamedpipelistener.c
index 61ccbc6..40c7925 100644
--- a/wing/wingnamedpipelistener.c
+++ b/wing/wingnamedpipelistener.c
@@ -736,6 +736,6 @@ wing_named_pipe_listener_set_use_iocp (WingNamedPipeListener *listener,
   if (priv->use_iocp != use_iocp)
     {
       priv->use_iocp = use_iocp;
-      g_object_notify_by_pspec (listener, props[PROP_USE_IOCP]);
+      g_object_notify_by_pspec (G_OBJECT (listener), props[PROP_USE_IOCP]);
     }
 }
\ No newline at end of file