patch 8.1.1866: modeless selection in GUI does not work properly

Problem:    Modeless selection in GUI does not work properly.
Solution:   Avoid going beyond the end of the line. (closes #4783)
diff --git a/src/version.c b/src/version.c
index f8a907e..4b3637c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1866,
+/**/
     1865,
 /**/
     1864,