patch 8.2.4082: check for autoload file name and prefix fails

Problem:    Check for autoload file name and prefix fails. (Christian J.
            Robinson)
Solution:   Only lower case the prefix on systems where the file name is not
            case sensitive.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4082,
 /**/
     4081,
 /**/