Fix double-free error: r289419 moved all error handling in http_connect()

to the end of the function, but did not remove a fetch_close() call which
was made redundant by the one in the shared error-handling code.

PR:		206774
Submitted by:	Christian Heckendorf <heckendorfc@gmail.com>
MFC after:	3 days

lib/libfetch/http.c

@@ -1435,7 +1435,6 @@ http_connect(struct url *URL, struct url *purl, const char *flags)
 	}
 	if (strcasecmp(URL->scheme, SCHEME_HTTPS) == 0 &&
 	    fetch_ssl(conn, URL, verbose) == -1) {
-		fetch_close(conn);
 		/* grrr */
 		errno = EAUTH;
 		fetch_syserr();