tree b53c1a41e71b535ff03e4308a30214f8f4d1afc3
parent b0ddae55e53c90880212caf0e19e439a3898abfd
author Tao Bao <tbao@google.com> 1465861174 -0700
committer Tao Bao <tbao@google.com> 1465861372 -0700

applypatch: Don't call inflate() when it expects zero-length output.

We may have expanded_len == 0 when calling inflate(). After switching to
using std::vector, it passes a nullptr buffer to inflate() and leads to
Z_STREAM_ERROR.

Bug: 29312140
Change-Id: Iab7c6c07a9e8488e844e7cdda76d02bd60d2ea98