sh: Fix two things about {(...)} <redir:

* In {(...) <redir1;} <redir2, do not drop redir1.
* Maintain the difference between (...) <redir and {(...)} <redir:
  In (...) <redir, the redirection is performed in the child, while in
  {(...)} <redir it should be performed in the parent (like {(...); :;}
  <redir)

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/regression/bin/sh/execution/redir5.0 b/tools/regression/bin/sh/execution/redir5.0
new file mode 100644
index 000000000000..707ca68f737a
--- /dev/null
+++ b/tools/regression/bin/sh/execution/redir5.0
@@ -0,0 +1,3 @@
+# $FreeBSD$
+
+{ (echo bad) >/dev/null; } </dev/null