patch 9.1.0160: Vim9: Add support for using a class type of itself in an object method

Problem:  Add support for using a class type of itself in an object
          method (thinca)
Solution: Vim9: Add support for using a class type of itself in an
          object method (Yegappan Lakshmanan)

fixes: #12369
closes: #14165

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/shared.vim b/src/testdir/shared.vim
index 47aeab3..dd2f012 100644
--- a/src/testdir/shared.vim
+++ b/src/testdir/shared.vim
@@ -301,7 +301,7 @@
   let cmd .= ' --not-a-term'
   let cmd .= ' --gui-dialog-file guidialogfile'
   " remove any environment variables
-  let cmd = substitute(cmd, '[A-Z_]*=\S\+ *', '', 'g')
+  let cmd = substitute(cmd, '[A-Z_]\+=\S\+ *', '', 'g')
 
   " If using valgrind, make sure every run uses a different log file.
   if cmd =~ 'valgrind.*--log-file='