tree fce57022f4f081556b938ec9e02283543ed41913
parent 3a072c8a7a6b969d319c8ef47a3c40c7c00bd982
author Shawn Pearce <spearce@spearce.org> 1500497766 -0700
committer Shawn Pearce <spearce@spearce.org> 1500497766 -0700

dfs: actually allow current DfsBlock to GC

Holding the current DfsBlock in a local variable 'b' may prevent the
Java GC from reclaiming it while loading the next block.  Remove the
local variable and rely only on the field.

Change-Id: Ibfc8394cac717b485fdc94d5c8479c3f8ca78ee4