patch 7.4.1598
Problem:    When starting the GUI fails a swap file is left behind. (Joerg
            Plate)
Solution:   Preserve files before exiting. (closes #692)
diff --git a/src/version.c b/src/version.c
index 4d0c250..7379875 100644
--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1598,
+/**/
     1597,
 /**/
     1596,