River Riddle 5f6bdd144a NFC: Cleanup the implementation of walkSymbolUses.
Refactor the implementation to be much cleaner by adding a `make_second_range` utility to walk the `second` value of a range of pairs.

PiperOrigin-RevId: 275598985
2019-10-18 21:29:15 -07:00
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2019-10-04 04:37:53 -07:00
2019-10-04 04:37:53 -07:00
2019-10-07 05:05:42 -07:00