patch 9.1.0422: function echo_string_core() is too long

Problem:  function echo_string_core() is too long
Solution: Refactor into several smaller functions
          (Yegappan Lakshmanan)

closes: #14804

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index df50a43..ce9627b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    422,
+/**/
     421,
 /**/
     420,