tree a2293631eb289946767a43400e104c136575cc45
parent 937bbc2c8132d439815c36b4cad7e7224c0437d3
author David Pursehouse <dpursehouse@collab.net> 1521247182 +0900
committer David Pursehouse <dpursehouse@collab.net> 1521247184 +0900

ConfigUtil: Annotate getDuration as @Nullable

getDuration can return null if the value is not configured and null is
given for the defaultValue (which is already annotated as @Nullable).

Change-Id: Iebf59b4f1070eabca7ef6f61e6c51a748123d343