ceph: initialize pathbase in the !dentry case in encode_caps_cb()

pathbase is the base inode; set it to 0 if we've got no path.

Coverity-id: 146348
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index fa59a85..f72d4ae 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2759,6 +2759,7 @@
 	} else {
 		path = NULL;
 		pathlen = 0;
+		pathbase = 0;
 	}
 
 	spin_lock(&ci->i_ceph_lock);