patch 8.2.4274: Basic and form filetype detection is incomplete

Problem:    Basic and form filetype detection is incomplete.
Solution:   Add a separate function for .frm files. (Doug Kearns, closes #9675)
diff --git a/src/version.c b/src/version.c
index 4c9c594..921f076 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4274,
+/**/
     4273,
 /**/
     4272,