fix two "make syntax check" failures

* src/xenapi/xenapi_driver.c (xenapiOpen): Remove useless-if-before-free.
* po/POTFILES.in: Add src/xenapi/xenapi_utils.c.

po/POTFILES.in

@@ -78,5 +78,6 @@ src/xen/xen_hypervisor.c
 src/xen/xen_inotify.c
 src/xen/xm_internal.c
 src/xen/xs_internal.c
+src/xenapi/xenapi_utils.c
 tools/console.c
 tools/virsh.c

src/xenapi/xenapi_driver.c

@@ -102,7 +102,7 @@ xenapiOpen (virConnectPtr conn, virConnectAuthPtr auth, int flags ATTRIBUTE_UNUS
     }
     if (!passwd || !conn->uri->user) {
         xenapiSessionErrorHandler(conn, VIR_ERR_AUTH_FAILED, "Username/Password not valid");
-        if (passwd) VIR_FREE(passwd);
+        VIR_FREE(passwd);
         return VIR_DRV_OPEN_ERROR;
     }
     if (VIR_ALLOC(privP) < 0) {