[Bug #2987] typoの修正

Bug #2987: typoe$B$N=$@5e(B
http://redmine.ruby-lang.org/issues/show/2987

e$B5/I<<Te(B: Sho H.
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Normal
ruby -v: uby 1.9.2dev (2010-03-20 trunk 26984) [i686-linux]

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e$B$J$*!"e(Blib/irb/notifier.rb e$B$Ge(B AbstructNotifier e$B$re(B
AbstractNotifier e$B$KCV$-e(B
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e$B$J$+$@$G$9!#e(B

At Sat, 20 Mar 2010 11:59:07 +0900,
Sho H. wrote in [ruby-dev:40716]:

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(e$B<g$K%3%a%s%H$KBP$9$k=$@5$G$9e(B)

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e$B$J$*!"e(Blib/irb/notifier.rb e$B$Ge(B AbstructNotifier e$B$re(B AbstractNotifier e$B$KCV$-e(B
e$B49$($k$h$&$J=$@5$,4^$^$l$F$$$^$9!#<h$j9~$`>l9g$O$=$3$@$15$$rIU$1$F$d$C$F$/$@$5$$!#e(B

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