util: named anonymous functions
named two anonymous functions in util.js. references https://github.com/nodejs/node/issues/8913.
Checklist
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make -j4 test(UNIX), orvcbuild test(Windows) passes -
commit message follows commit guidelines
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named two anonymous functions in util.js. references https://github.com/nodejs/node/issues/8913.
make -j4 test (UNIX), or vcbuild test (Windows) passes