patch 9.0.0721: virtual text "above" with padding not displayed correctly

Problem:    Virtual text "above" with padding not displayed correctly.
Solution:   Take padding into account when truncating. (closes #11340)
diff --git a/src/version.c b/src/version.c
index 87259de..86bec6c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    721,
+/**/
     720,
 /**/
     719,