I think this doesnot match. Before I have to close it. When next '<' some text '>' exists it should close. 
#!/usr/bin/perl
while(<DATA>){

s/(<a\s\w*[=|]\w*)</$1<\/a>/g;

print $_;

}

__DATA__
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In reply to Re^3: close end tag by gem555
in thread close end tag by gem555

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