[gvfs/wip/udisks2] udisks2: Check for NULL volume when unmounting

[David Zeuthen <davidz src gnome org>]

commit 62b8df0bc915149f8c64a04423453ee4f0109d2f
Author: David Zeuthen <davidz redhat com>
Date:   Fri Oct 14 13:59:13 2011 -0400

    udisks2: Check for NULL volume when unmounting
    
    Signed-off-by: David Zeuthen <davidz redhat com>

 monitor/udisks2/gvfsudisks2mount.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/monitor/udisks2/gvfsudisks2mount.c b/monitor/udisks2/gvfsudisks2mount.c
index 31ccca3..54a87d5 100644
--- a/monitor/udisks2/gvfsudisks2mount.c
+++ b/monitor/udisks2/gvfsudisks2mount.c
@@ -935,7 +935,9 @@ gvfs_udisks2_mount_unmount_with_operation (GMount              *_mount,
       goto out;
     }
 
-  block = gvfs_udisks2_volume_get_block (data->mount->volume);
+  block = NULL;
+  if (mount->volume != NULL)
+    block = gvfs_udisks2_volume_get_block (data->mount->volume);
   if (block != NULL)
     {
       GDBusObject *object;