[gparted] Add missing includes into jfs.cc

[Curtis Gedak <gedakc src gnome org>]

commit af60f91f7f5efde3a0733e4b0df1b196e61a5303
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Sat Nov 9 10:15:19 2019 +0000

    Add missing includes into jfs.cc

 src/jfs.cc | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/jfs.cc b/src/jfs.cc
index fa773b9d..2698cb79 100644
--- a/src/jfs.cc
+++ b/src/jfs.cc
@@ -17,8 +17,12 @@
 
 #include "jfs.h"
 #include "FileSystem.h"
+#include "OperationDetail.h"
 #include "Partition.h"
+#include "Utils.h"
 
+#include <stdio.h>
+#include <glibmm/ustring.h>
 #include <glibmm/miscutils.h>
 #include <glibmm/shell.h>