hg: openjfx/8u-dev/rt: 8194265: Webengine (webkit) crash when reading files using FileReader

[guru.hb at oracle.com]

Changeset: 5f5d214f6fac
Author:    ghb
Date:      2018-01-09 09:24 +0530
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/5f5d214f6fac

8194265: Webengine (webkit) crash when reading files using FileReader
Reviewed-by: arajkumar, rkamath, mbilla

! modules/web/src/main/native/Source/WebCore/fileapi/AsyncFileStream.cpp