Disable libjpeg turbo getenv()

getenv() is used in libjpeg_turbo to get environment variable JPEGMEM
which overrides the default max_memory setting from jpeg_mem_init.
However, getenv() is not thread-safe. Now libjpeg may be called from
multiple threads when impl-side-painting is enabled.

BUG=322228
R=noel@chromium.org

Committed: 8692fb5

Review URL: https://codereview.chromium.org/100293002

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo@238232 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed