Don't update vol details after build

This patch removes the call to vol update after the volume build completes.
The update call is currently meaningless anyway because the vol build is passed
a copy of the definition, so the update result is thrown away.  More
importantly, if the user specified a selinux label for the volume, the update
call results in a double free of the label
* src/storage/storage_backend_fs.c: remove the update call

src/storage/storage_backend_fs.c

@@ -822,14 +822,6 @@ _virStorageBackendFileSystemVolBuild(virConnectPtr conn,
         return -1;
     }
 
-    /* Refresh allocation / permissions info, but not capacity */
-    if (virStorageBackendUpdateVolTargetInfoFD(conn, &vol->target, fd,
-                                               &vol->allocation,
-                                               NULL) < 0) {
-        close(fd);
-        return -1;
-    }
-
     if (close(fd) < 0) {
         virReportSystemError(conn, errno,
                              _("cannot close file '%s'"),