patch 8.2.3882: more duplicated code in f_getreginfo()

Problem:    More duplicated code in f_getreginfo().
Solution:   Also use getreg_get_regname(). (closes #9398)
diff --git a/src/version.c b/src/version.c
index 9d6c0d9..a77aa04 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3882,
+/**/
     3881,
 /**/
     3880,