[gvfs] udisks2: Compile function only if we have udisks >= 2.0.90

[Ross Lagerwall <rossl src gnome org>]

commit 0790a32bb8868cf3b471d76c7a23f2fcf433e85d
Author: Ross Lagerwall <rosslagerwall gmail com>
Date:   Mon Nov 18 08:22:47 2013 +0200

    udisks2: Compile function only if we have udisks >= 2.0.90
    
    https://bugzilla.gnome.org/show_bug.cgi?id=712382

 monitor/udisks2/gvfsudisks2drive.c  |    2 ++
 monitor/udisks2/gvfsudisks2volume.c |    2 ++
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/monitor/udisks2/gvfsudisks2drive.c b/monitor/udisks2/gvfsudisks2drive.c
index b239c6d..6ea6b82 100644
--- a/monitor/udisks2/gvfsudisks2drive.c
+++ b/monitor/udisks2/gvfsudisks2drive.c
@@ -124,6 +124,7 @@ emit_changed (GVfsUDisks2Drive *drive)
 }
 
 
+#if UDISKS_CHECK_VERSION(2,0,90)
 static gpointer
 _g_object_ref0 (gpointer object)
 {
@@ -132,6 +133,7 @@ _g_object_ref0 (gpointer object)
   else
     return NULL;
 }
+#endif
 
 static gboolean
 update_drive (GVfsUDisks2Drive *drive)
diff --git a/monitor/udisks2/gvfsudisks2volume.c b/monitor/udisks2/gvfsudisks2volume.c
index 0980233..0b7c5c4 100644
--- a/monitor/udisks2/gvfsudisks2volume.c
+++ b/monitor/udisks2/gvfsudisks2volume.c
@@ -193,6 +193,7 @@ apply_options_from_fstab (GVfsUDisks2Volume *volume,
 }
 
 
+#if UDISKS_CHECK_VERSION(2,0,90)
 static gpointer
 _g_object_ref0 (gpointer object)
 {
@@ -201,6 +202,7 @@ _g_object_ref0 (gpointer object)
   else
     return NULL;
 }
+#endif
 
 static gboolean
 update_volume (GVfsUDisks2Volume *volume)