patch 8.2.5074: spell test fails on MS-Windows

Problem:    Spell test fails on MS-Windows.
Solution:   Do not change 'encoding'

Author: brammool

src/testdir/test_spell_utf8.vim

@@ -811,9 +811,7 @@ func Test_check_empty_line()
   sil! norm P]svc
   norm P]s
 
-  " set 'encoding' to clear the wordt list
-  set enc=latin1
-  set enc=utf-8
+  " TODO: should we clear the word list?
   bwipe!
 endfunc
 

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    5074,
 /**/
     5073,
 /**/