Fix: pass opdata when sending message fragment

The inject_message callback was missing the opdata when sending message
fragments.
Signed-off-by: David Goulet <dgoulet@ev0ke.net>

src/message.c

@@ -441,7 +441,7 @@ fragment:
 	/* Fragment and send according to policy */
 	if (!err && messagep && *messagep) {
 	    if (context) {
-		err = fragment_and_send(ops, NULL, context, *messagep,
+		err = fragment_and_send(ops, opdata, context, *messagep,
 			fragPolicy, messagep);
 	    }
 	}