Skip empty binary name to be searched on Windows (#993) (#1018)
Skip empty binary name to be searched on Windows (#993) (#1018)

Without the change, if PATH environment variable contains a component
where the component name + ".exe" exists, the exe is used as well as gpg.

Signed-off-by: Iku Iwasa <507eeacf551e918fa8445d26b1e17ff613233a95@gmail.com>
franciscocpg/gopass,gopasspw/gopass,justwatchcom/gopass,gopasspw/gopass