patch 9.0.0464: with virtual text "above" indenting doesn't work well

Problem:    With virtual text "above" indenting doesn't work well.
Solution:   Ignore text properties while adjusting indent. (issue #11084)
diff --git a/src/version.c b/src/version.c
index 1c2e49f..45afd9d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    464,
+/**/
     463,
 /**/
     462,