BUG #6179: "service postgresql-9.0 stop" does not stop postgresql server

The following bug has been logged online:

Bug reference:      6179
Logged by:          Ken
Email address:      borg@sprint-v.com.ru
PostgreSQL version: 9.0.4
Operating system:   CentOS 6.0 x86_64
Description:        "service postgresql-9.0 stop" does not stop postgresql
server
Details:

Hi.

I am use RPM binaries from postgresql.org yum repository. Postgresql started
normally ("service postgresql-9.0 start"), but refuse stopping ("service
postgresql-9.0 stop"):
---------------------------------------------
[root@storage-2 init.d]# service postgresql-9.0 stop ; echo ; sleep 3 ; ps
ax | fgrep post
Stopping postgresql-9.0 service: Postmaster dead, but subsys exists.
                                                           [  OK  ]
 1685 ?        Ss     0:00 /usr/libexec/postfix/master
22254 ?        S      0:00 /usr/pgsql-9.0/bin/postmaster -p 5432 -D
/var/lib/pgsql/9.0/data
22262 ?        Ss     0:00 postgres: logger process
22264 ?        Ss     0:00 postgres: writer process
22265 ?        Ss     0:00 postgres: wal writer process
22266 ?        Ss     0:00 postgres: autovacuum launcher process
22267 ?        Ss     0:00 postgres: stats collector process
22344 pts/2    S+     0:00 fgrep post
[root@storage-2 init.d]#
---------------------------------------------

Here proposed patch for /etc/rc.d/init.d/postgresql-9.0 (seems typo, as
lockfile in almost cases have zero size):
----------------------------------------------------------------------------
-----------------------
158c158
<       if  [ -e "$lockfile" ] &&   [ ! -s "$lockfile" ]
---
>       if  [ -e "$lockfile" ] &&   [ ! -s "$pidfile" ]
----------------------------------------------------------------------------
-----------------------