patch 9.1.1236: tests: test_comments leaves swapfiles around

Problem:  tests: test_comments leaves swapfiles around
Solution: use ':bw!' instead of ':close!'

closes: #16955

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index e0a141a..a4b6002 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1236,
+/**/
     1235,
 /**/
     1234,