[gnome-disk-utility/udisks2-port] Don't dereference NULL pointer if there is no drive

[David Zeuthen <davidz src gnome org>]

commit 803ef4e4108ba59115292d1193181fe61e330cd9
Author: David Zeuthen <davidz redhat com>
Date:   Fri Jan 20 11:49:57 2012 -0500

    Don't dereference NULL pointer if there is no drive
    
    Signed-off-by: David Zeuthen <davidz redhat com>

 src/palimpsest/gduwindow.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/palimpsest/gduwindow.c b/src/palimpsest/gduwindow.c
index 29f936e..e9a9324 100644
--- a/src/palimpsest/gduwindow.c
+++ b/src/palimpsest/gduwindow.c
@@ -1699,7 +1699,7 @@ update_device_page_for_block (GduWindow          *window,
   gboolean read_only;
   gchar *s;
   UDisksObject *drive_object;
-  UDisksDrive *drive;
+  UDisksDrive *drive = NULL;
 
   read_only = udisks_block_get_read_only (block);
   partition = udisks_object_peek_partition (object);
@@ -1715,7 +1715,7 @@ update_device_page_for_block (GduWindow          *window,
     }
 
   /* TODO: don't show on CD-ROM drives etc. */
-  if (udisks_block_get_size (block) > 0 || !udisks_drive_get_media_change_detected (drive))
+  if (udisks_block_get_size (block) > 0 || (drive != NULL && !udisks_drive_get_media_change_detected (drive)))
     {
       *show_flags |= SHOW_FLAGS_POPUP_MENU_CREATE_VOLUME_IMAGE;
       *show_flags |= SHOW_FLAGS_DISK_POPUP_MENU_CREATE_DISK_IMAGE;
@@ -1835,7 +1835,7 @@ update_device_page_for_block (GduWindow          *window,
     }
   else
     {
-      if (udisks_drive_get_ejectable (drive))
+      if (drive != NULL && udisks_drive_get_ejectable (drive))
         *show_flags |= SHOW_FLAGS_EJECT_BUTTON;
     }