patch 8.1.0477: tiny build fails

Problem:    Tiny build fails.
Solution:   Add a dummy declaration for funccal_entry_T.
diff --git a/src/version.c b/src/version.c
index 56addcd..1268cdc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -793,6 +793,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    477,
+/**/
     476,
 /**/
     475,