patch 8.2.2040: terminal buffer disappears even when 'bufhidden' is "hide"

Problem:    Terminal buffer disappears even when 'bufhidden' is "hide".
            (Sergey Vlasov)
Solution:   Check 'bufhiddden' when a terminal buffer becomes hidden.
            (closes #7358)
diff --git a/src/version.c b/src/version.c
index 91c820d..19757ca 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2040,
+/**/
     2039,
 /**/
     2038,