patch 8.2.0779: tmode_T not used everywhere

Problem:    Tmode_T not used everywhere.
Solution:   Also use tmode_T for settmode().
diff --git a/src/version.c b/src/version.c
index fa05a76..8e91aea 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    779,
+/**/
     778,
 /**/
     777,