updated for version 7.4.539
Problem:    Crash when computing buffer count.  Problem with range for user
            commands.  Line range wrong in Visual area.
Solution:   Avoid segfault in compute_buffer_local_count().  Check for
            CMD_USER when checking type of range. (Marcin Szamotulski)
diff --git a/src/version.c b/src/version.c
index 9545d00..9e9e802 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    539,
+/**/
     538,
 /**/
     537,