[PATCH 1 of 4] convert: fix a file descriptor leak

[Yuya Nishihara]

On Wed, 26 Sep 2018 00:06:01 -0400, Matt Harbison wrote:
> # HG changeset patch
> # User Matt Harbison <matt_harbison at yahoo.com>
> # Date 1537929978 14400
> #      Tue Sep 25 22:46:18 2018 -0400
> # Node ID 9403d51284f4cab9b143612157c747fe13382c5b
> # Parent  7a9e2d85f475b1675da537ece26419887f9d8b4e
> convert: fix a file descriptor leak

Queued these, thanks.