Initialize the context in 'test_auth_clear'.
Fixes the test suite on mips64el.

Patch by Mark H Weaver <mhw@netris.org>

--- libotr-4.1.1/tests/unit/test_auth.c.orig	2015-12-25 12:39:45.000000000 -0500
+++ libotr-4.1.1/tests/unit/test_auth.c	2016-03-17 18:53:10.169999706 -0400
@@ -67,6 +67,7 @@
 	OtrlAuthInfo *auth = &ctx.auth;
 
 	/* API call. */
+	otrl_auth_new(&ctx);
 	otrl_auth_clear(auth);
 
 	ok(auth->authstate == OTRL_AUTHSTATE_NONE &&
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<tr><td><span title='2024-02-19 18:42:12 +0100'>2024-02-19</span></td><td><a href='/guix/commit/gnu/build/install.scm?id=27ee6f06d0ecab58ca3b739c911bacefda440177'>services: activation: Ensure /run existence.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/activation.scm (activation-script): Ensure /var/run existence.
* gnu/build/install.scm (evaluate-populate-directive)
[directives]: Remove directory /run.

Change-Id: I19ca8e7605c0cff598ab89077a94e20390ba27b0
Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Nicolas Graves</td></tr>
<tr><td><span title='2024-02-19 18:41:47 +0100'>2024-02-19</span></td><td><a href='/guix/commit/gnu/build/install.scm?id=e73db355b127b9ca2b5339f645f2d3eb6929531f'>services: activation: Ensure /var/run existence.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services.scm (activation-script): Ensure /var/run existence.
* gnu/build/install.scm (evaluate-populate-directive)
[directives]: Remove directory /var/run.

Change-Id: I5fb93d33b6b1f045f1e5ba206b9b0b74b5184260
Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Nicolas Graves</td></tr>