ssh: fix if/else returns to adhere to Go style guidelines

Change-Id: Iea55e6397c49046d7d3e0eb66a392f1779d91802
Reviewed-on: https://go-review.googlesource.com/47050
Reviewed-by: Han-Wen Nienhuys <hanwen@google.com>
Run-TryBot: Han-Wen Nienhuys <hanwen@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
1 file changed