patch 9.0.0983: stray characters displayed when starting the GUI

Problem:    Stray characters displayed when starting the GUI.
Solution:   Add t_RK to the list of terminal options.
diff --git a/src/version.c b/src/version.c
index 5a13127..e78e71f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    983,
+/**/
     982,
 /**/
     981,