ipaccess: Call line->ops->sign_link_down() only if set
This op must not necessarily be set by the user, so check if it is set before calling it. Change-Id: I666c5bbf157fe604e336df44f7eac098572d42ba
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@ -123,7 +123,8 @@ static int ipaccess_drop(struct osmo_fd *bfd, struct e1inp_line *line)
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e1i_ts->pending_msg = NULL;
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/* e1inp_sign_link_destroy releases the socket descriptors for us. */
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line->ops->sign_link_down(line);
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if (line->ops->sign_link_down)
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line->ops->sign_link_down(line);
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e1inp_line_put2(line, __func__);
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return ret;
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