patch 8.2.2422: crash when deleting with line number out of range

Problem:    Crash when deleting with line number out of range. (Houyunsong)
Solution:   Avoid using a negative line number.
diff --git a/src/version.c b/src/version.c
index 9709e32..c710be8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2422,
+/**/
     2421,
 /**/
     2420,