patch 9.1.0393: 'viewdir' not respecting $XDG_CONFIG_HOME

Problem:  'viewdir' not respecting $XDG_CONFIG_HOME
          (Danilo Rezende, after v9.1.327)
Solution: adjust 'viewdir' option when enabling XDG config mode

fixes: #14680
closes: #14708

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 1efc081..5312bfe 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    393,
+/**/
     392,
 /**/
     391,