patch 8.2.1130: Vim9: bar not recognized after function call

Problem:    Vim9: bar not recognized after function call
Solution:   Skip whitespace. (closes #6391)
diff --git a/src/testdir/test_vim9_cmd.vim b/src/testdir/test_vim9_cmd.vim
index 53d964f..d7c01aa 100644
--- a/src/testdir/test_vim9_cmd.vim
+++ b/src/testdir/test_vim9_cmd.vim
@@ -216,6 +216,13 @@
   RedrawAndEcho()
   assert_match('did redraw', Screenline(&lines))
 
+  def CallAndEcho()
+    let x = 'did redraw'
+    reg_executing() | echo x
+  enddef
+  CallAndEcho()
+  assert_match('did redraw', Screenline(&lines))
+
   if has('unix')
     # bar in filter write command does not start new command
     def WriteToShell()