patch 8.2.1432: various inconsistencies in test files

Problem:    Various inconsistencies in test files.
Solution:   Add modelines where they were missing.  Use Check commands instead
            of silently skipping over tests.  Adjust indents and comments.
            (Ken Takata, closes #6695)
diff --git a/src/testdir/test_close_count.vim b/src/testdir/test_close_count.vim
index 1f9adba..c0c3730 100644
--- a/src/testdir/test_close_count.vim
+++ b/src/testdir/test_close_count.vim
@@ -1,5 +1,5 @@
-
 " Tests for :[count]close! command
+
 func Test_close_count()
   enew! | only
 
@@ -172,3 +172,5 @@
   set nohidden
   only!
 endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab