patch 8.1.0484: some file types are not recognized

Problem:    Some file types are not recognized.
Solution:   Update the file type detection.
diff --git a/src/version.c b/src/version.c
index 2c7550d..ab54bb3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -793,6 +793,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    484,
+/**/
     483,
 /**/
     482,