[PATCH] Silence "using xxx as default secret key" message with --quiet flag

[Kevin J. McCarthy]

Sorry for the drive-by patch.  I've recently started using gpg 2.1, and
now every time I sign a message in mutt, gpg generates the output
  gpg: using "xxxx" as default secret key for signing
despite passing the --quiet flag.

It looks like just adding a check for opt.quiet inside
parse_def_secret_key() should silence this message.

I can't seem to clone the git repos right now, so I'm attaching a simple
diff.  Would it be possible to have this committed?

Thank you,

-Kevin


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--- g10/getkey.c.orig	2016-03-09 13:00:19.591723827 -0800
+++ g10/getkey.c	2016-03-09 13:00:34.175092828 -0800
@@ -1676,11 +1676,11 @@
               print_reported_error (err, GPG_ERR_NO_SECKEY);
             }
         }
       else
         {
-          if (! warned)
+          if (! warned && ! opt.quiet)
             log_info (_("using \"%s\" as default secret key for signing\n"),
                       t->d);
           break;
         }
     }
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