[glib] gio: fix two more g_task_return_error_if_cancelled() leaks

[Dan Winship <danw src gnome org>]

commit 1e8c4d2a6e302dde5d8441d5873f4def4f4eb629
Author: Dan Winship <danw gnome org>
Date:   Tue Mar 18 09:56:23 2014 -0400

    gio: fix two more g_task_return_error_if_cancelled() leaks
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726611

 gio/gunixmount.c  |    5 ++++-
 gio/gunixvolume.c |    5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/gio/gunixmount.c b/gio/gunixmount.c
index a42614f..2ec8e5c 100644
--- a/gio/gunixmount.c
+++ b/gio/gunixmount.c
@@ -283,7 +283,10 @@ eject_unmount_do_cb (gpointer user_data)
   argv = g_task_get_task_data (task);
 
   if (g_task_return_error_if_cancelled (task))
-    return G_SOURCE_REMOVE;
+    {
+      g_object_unref (task);
+      return G_SOURCE_REMOVE;
+    }
 
   subprocess = g_subprocess_newv (argv, G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_PIPE, 
&error);
   g_assert_no_error (error);
diff --git a/gio/gunixvolume.c b/gio/gunixvolume.c
index 1c12505..981f703 100644
--- a/gio/gunixvolume.c
+++ b/gio/gunixvolume.c
@@ -309,7 +309,10 @@ eject_mount_do (GVolume              *volume,
   task = g_task_new (volume, cancellable, callback, user_data);
 
   if (g_task_return_error_if_cancelled (task))
-    return;
+    {
+      g_object_unref (task);
+      return;
+    }
 
   subprocess = g_subprocess_newv (argv, G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_PIPE, 
&error);
   g_assert_no_error (error);