modules_k/siputils: allow tel2sip call also in failure route.

modules_k/siputils/README

@@ -508,7 +508,8 @@ add_uri_param("nat=yes");
    The SIP URI hostpart is taken from second param (pseudo variable or
    string).
 
-   This function can be used from REQUEST_ROUTE or ONREPLY_ROUTE.
+   This function can be used from REQUEST_ROUTE, FAILURE_ROUTE, or
+   ONREPLY_ROUTE.
 
    Example 1.17. tel2sip usage
 ...

modules_k/siputils/doc/siputils_admin.xml

@@ -502,7 +502,8 @@ add_uri_param("nat=yes");
 		(pseudo variable or string).
 		</para>
 		<para>
-		This function can be used from REQUEST_ROUTE or ONREPLY_ROUTE.
+		This function can be used from REQUEST_ROUTE, FAILURE_ROUTE,
+		or ONREPLY_ROUTE.
 		</para>
 		<example>
 		<title><function>tel2sip</function> usage</title>

modules_k/siputils/siputils.c

@@ -139,7 +139,7 @@ static cmd_export_t cmds[]={
 	{"decode_contact",     (cmd_function)decode_contact,    0, 0,
 		0, REQUEST_ROUTE},
 	{"decode_contact_header", (cmd_function)decode_contact_header, 0, 0,
-		0,REQUEST_ROUTE|ONREPLY_ROUTE},
+		0,REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
 	{"cmp_uri",  (cmd_function)w_cmp_uri,                   2, fixup_spve_spve,
 		0, ANY_ROUTE},
 	{"cmp_aor",  (cmd_function)w_cmp_aor,                   2, fixup_spve_spve,