undo CL 5477092 / c3c6e72d7cc5
undo CL 5477092 / c3c6e72d7cc5

The obvious fix is breaking the build in non-obvious ways.
Reverting while waiting for the correct fix, if any is needed.

««« original CL description
net/http: fix bug in error checking

Thanks to josef86@gmail.com for pointing this out.

R=golang-dev, iant
CC=golang-dev
http://codereview.appspot.com/5477092
»»»

R=iant
CC=golang-dev
http://codereview.appspot.com/5488085

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