c/9678: Incorrect specs for cpp_cpucommon on i386

[BAN Nobuhiro]

>PR c/9678: Incorrect specs for cpp_cpucommon on i386

I'm sorry for my mistake on my e-mail address.
The correct one is ban@ipl.t.u-tokyo.ac.jp.

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BAN Nobuhiro <ban@ipl.t.u-tokyo.ac.jp>