patch 8.1.0436: can get the text of inputsecret() with getcmdline()

Problem:    Can get the text of inputsecret() with getcmdline(). (Tommy Allen)
Solution:   Don't return the text.
diff --git a/src/version.c b/src/version.c
index d3b09ea..7f21f2d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    436,
+/**/
     435,
 /**/
     434,