Dirmngr - high cpu usage - 100%

[NIIBE Yutaka]

Hello, again,

NIIBE Yutaka <gniibe at fsij.org> wrote:
> ECONNREFUSED can be returned by connect(2) on POSIX system.  Retrying
> (by goto udp_connect_retry) is wrong in the code.

I found: https://dev.gnupg.org/T3374

Actually, it was me who considered wrongly for ECONNREFUSED.

And we also have a ticket: https://dev.gnupg.org/T4021

I pushed a fix to master with the ticket of T4021.

The commit is: 1ed8b0e7b40304368f0466b03b33c3c40becfc3c
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