bug#12002: 24.1.50; ERC nick change trouble

[Glenn Morris]

Version: 24.3

Thanks. I installed a simpler change (below). Please let me know if it
is not ok, since I don't use erc.

*** lisp/erc/erc-backend.el     2012-10-06 01:04:53 +0000
--- lisp/erc/erc-backend.el     2012-10-07 01:25:39 +0000
***************
*** 1316,1322 ****
           (when (equal (erc-default-target) nick)
             (setq erc-default-recipients
                   (cons nn (cdr erc-default-recipients)))
!            (rename-buffer nn)
             (erc-update-mode-line)
             (add-to-list 'bufs (current-buffer)))))
        (erc-update-user-nick nick nn host nil nil login)
--- 1316,1322 ----
           (when (equal (erc-default-target) nick)
             (setq erc-default-recipients
                   (cons nn (cdr erc-default-recipients)))
!            (rename-buffer nn t)         ; bug#12002
             (erc-update-mode-line)
             (add-to-list 'bufs (current-buffer)))))
        (erc-update-user-nick nick nn host nil nil login)