patch 8.1.0839: when using VTP wrong colors after a color scheme change

Problem:    When using VTP wrong colors after a color scheme change.
Solution:   When VTP is active always clear after a color scheme change.
            (Nobuhiro Takasaki, closes #3872)
diff --git a/src/version.c b/src/version.c
index 7d63c55..b69344c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -784,6 +784,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    839,
+/**/
     838,
 /**/
     837,