undo CL 9658043 / ac7877558dce
undo CL 9658043 / ac7877558dce

The original code was correct. The count returned must be the length
of the input slice, not the length of the formatted message.

««« original CL description
log/syslog: report errors from Fprintf
Thanks to chiparus for identifying this.

Fixes issue 5541.

R=golang-dev, iant
CC=golang-dev
https://codereview.appspot.com/9658043
»»»

R=golang-dev, iant
CC=golang-dev
https://codereview.appspot.com/9644044

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