os: drop File finalizer after normal Close

R=r CC=golang-dev https://golang.org/cl/586043

os: drop File finalizer after normal Close
R=r CC=golang-dev https://golang.org/cl/586043
b21f3137 · Russ Cox · f4322a84 · b21f3137
Commit b21f3137 authored Mar 19, 2010 by Russ Cox
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file.go src/pkg/os/file.go +3 -0

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--- a/src/pkg/os/file.go
+++ b/src/pkg/os/file.go
@@ -97,6 +97,9 @@ func (file *File) Close() Error {
 		err = &PathError{"close", file.name, Errno(e)}
 	}
 	file.fd = -1 // so it can't be closed again
+
+	// no need for a finalizer anymore
+	runtime.SetFinalizer(file, nil)
 	return err
 }