patch 9.0.1471: warnings for function declarations

Problem:    Warnings for function declarations.
Solution:   Add argument types. (Michael Jarvis, closes #12277)
diff --git a/src/version.c b/src/version.c
index 5f99909..99d1aec 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1471,
+/**/
     1470,
 /**/
     1469,