admin: fix memory leak of typed parameters getting client info

In the error code path, the temporary parameters are not freed.
Reviewed-by: NDaniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/admin/admin_server.c

@@ -310,6 +310,8 @@ adminClientGetInfo(virNetServerClientPtr client,
     ret = 0;
 
  cleanup:
+    if (tmpparams)
+        virTypedParamsFree(tmpparams, *nparams);
     virObjectUnref(identity);
     VIR_FREE(sock_addr);
     return ret;