patch 9.0.1021: test trips over g:name

Problem:    Test trips over g:name.
Solution:   Delete g:name after using it.

src/testdir/runtest.vim

@@ -208,6 +208,7 @@ endfunc
 for name in s:GetSwapFileList()
   call delete(name)
 endfor
+unlet name
 
 
 " Invoked when a test takes too much time.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1021,
 /**/
     1020,
 /**/