fix comment for 'getAddressValue'
fix comment for 'getAddressValue'

Summary: Looks like bad copy/pasta.

Differential Revision: D33279601

fbshipit-source-id: 24d3ad02422ac5af6a1624f09c719207ed4950a6

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly