x/crypto/ssh: use BigEndian.Uint32 for decoding exit status.

Change-Id: Iab40fe42454088a00abea61dfb6f368da9323eb3
Reviewed-on: https://go-review.googlesource.com/24726
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Han-Wen Nienhuys <hanwen@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
1 file changed