patch 8.2.0478: new buffers are not added to the Buffers menu

Problem:    New buffers are not added to the Buffers menu.
Solution:   Turn number into string. (Yee Cheng Chin, closes #5864)
diff --git a/src/version.c b/src/version.c
index 13a1c30..402ed40 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    478,
+/**/
     477,
 /**/
     476,