patch 8.2.2898: QuitPre and ExitPre not triggered when GUI window is closed

Problem:    QuitPre and ExitPre not triggered when GUI window is closed.
Solution:   Call before_quit_autocmds(). (closes #8242)
diff --git a/src/version.c b/src/version.c
index da315bf..4b1a7ae 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2898,
+/**/
     2897,
 /**/
     2896,