patch 8.2.1664: memory leak when using :mkview with a terminal buffer

Problem:    Memory leak when using :mkview with a terminal buffer.
Solution:   Don't use a hastab for :mkview. (Rob Pilling, closes #6935)
diff --git a/src/version.c b/src/version.c
index 0b0b8fb..735b8f62 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1664,
+/**/
     1663,
 /**/
     1662,