patch 8.1.2195: Vim does not exit when the terminal window is last window

Problem:    Vim does not exit when closing a terminal window and it is the
            last window.
Solution:   Exit Vim if the closed terminal window is the last one.
            (closes #4539)
diff --git a/src/version.c b/src/version.c
index 38696fa..c378c1b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2195,
+/**/
     2194,
 /**/
     2193,