patch 8.2.0989: crash after resizing a terminal window

Problem:    Crash after resizing a terminal window. (August Masquelier)
Solution:   Add check for valid row in libvterm. (closes #6273)
diff --git a/src/version.c b/src/version.c
index e1a41fb..d69b560 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    989,
+/**/
     988,
 /**/
     987,