BUG #14738: ALTER SERVER for foregin servers not working

The following bug has been logged on the website:

Bug reference: 14738
Logged by: Michal L
Email address: fcs1(at)poczta(dot)onet(dot)pl
PostgreSQL version: 9.4.1
Operating system: Windows 7 x64 Pro
Description:

Hello,

Command like this doesn't take effect:

ALTER SERVER srw_egib_1
OPTIONS (
SET host 'localhost',
SET port '5432',
SET dbname 'gml2m1');

It changes definition of this server but tables connected to it are still
connected to previous definition of this server, for example:

CREATE SERVER srw_egib_1
FOREIGN DATA WRAPPER postgres_fdw
OPTIONS (
host 'localhost',
port '5432',
dbname 'gml2');

It seams to take effect when I disconnect to the database and connect again.
I tested it on PgAdmin.

Regards
Michal