updated for version 7.4a.042
Problem:    Crash when BufUnload autocommands close all buffers. (Andrew
            Pimlott)
Solution:   Set curwin->w_buffer to curbuf to avoid NULL.
diff --git a/src/version.c b/src/version.c
index e435c1b..652305e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -728,6 +728,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    42,
+/**/
     41,
 /**/
     40,