[gvfs] google: Fix compile-time warning

[Bastien Nocera <hadess src gnome org>]

commit 096bf2224cf79c93a427f0c77639b34f576037ee
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Feb 28 16:28:50 2018 +0100

    google: Fix compile-time warning
    
    Move the variable into the block where it's used, behind a compile-time
    version check.
    
    gvfs/daemon/gvfsbackendgoogle.c: In function ‘g_vfs_backend_google_query_fs_info’:
    gvfs/daemon/gvfsbackendgoogle.c:2041:22: warning: unused variable ‘self’ [-Wunused-variable]
       GVfsBackendGoogle *self = G_VFS_BACKEND_GOOGLE (_self);
                          ^~~~
    
    https://bugzilla.gnome.org/show_bug.cgi?id=793922

 daemon/gvfsbackendgoogle.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/daemon/gvfsbackendgoogle.c b/daemon/gvfsbackendgoogle.c
index ca919a5..23bd8f5 100644
--- a/daemon/gvfsbackendgoogle.c
+++ b/daemon/gvfsbackendgoogle.c
@@ -2038,7 +2038,6 @@ g_vfs_backend_google_query_fs_info (GVfsBackend           *_self,
                                     GFileInfo             *info,
                                     GFileAttributeMatcher *matcher)
 {
-  GVfsBackendGoogle *self = G_VFS_BACKEND_GOOGLE (_self);
   GMountSpec *spec;
   const gchar *type;
 
@@ -2056,6 +2055,7 @@ g_vfs_backend_google_query_fs_info (GVfsBackend           *_self,
       g_file_attribute_matcher_matches (matcher, G_FILE_ATTRIBUTE_FILESYSTEM_FREE) ||
       g_file_attribute_matcher_matches (matcher, G_FILE_ATTRIBUTE_FILESYSTEM_USED))
     {
+      GVfsBackendGoogle *self = G_VFS_BACKEND_GOOGLE (_self);
       GCancellable *cancellable = G_VFS_JOB (job)->cancellable;
       gdata_documents_service_get_metadata_async (self->service, cancellable, fs_info_cb, job);
       return TRUE;