tree 3cc2b31935007b60fbbc58d4ff9343ffd288ab40
parent e08fa5afcdd95a1bd0d837863e6c1df77aae0cd0
author Dave Borowitz <dborowitz@google.com> 1499275955 -0400
committer Dave Borowitz <dborowitz@google.com> 1499284286 -0400

RefList: Support capacity <= 0 on new builders

Callers may estimate the size, and their estimate may be zero. Silently
allow this, rather than throwing IndexOutOfBoundsException later during
add.

Change-Id: Ife236f9f4ce469c57b18e76cf4fad6feb52cb2b0