patch 7.4.1137
Problem:    Illegal memory access when using :copen and :cclose.
Solution:   Avoid that curbuf is invalid. (suggestion by Justin M. Keyes)
            Add a test.
diff --git a/src/version.c b/src/version.c
index 30e6068..845158b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1137,
+/**/
     1136,
 /**/
     1135,