patch 8.0.0923: crash in GUI when terminal job exits

Problem:    Crash in GUI when terminal job exits. (Kazunobu Kuriyama)
Solution:   reset in_terminal_loop when a terminal is freed.
diff --git a/src/version.c b/src/version.c
index 2200bf0..3833f58 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    923,
+/**/
     922,
 /**/
     921,