patch 9.1.1375: [security]: possible heap UAF with quickfix dummy buffer

Problem:  heap use-after-free possible when autocommands switch away from the
          quickfix dummy buffer, but leave it open in a window.
Solution: close its windows first before attempting the wipe.
          (Sean Dewar)

related: #17283

Signed-off-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 236306e..11d7520 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1375,
+/**/
     1374,
 /**/
     1373,