hg: openjfx/8u-dev/rt: RT-40303: [Mac] Fix compiler type cast warnings on GLContext.c

[chien.yang at oracle.com]

Changeset: 8a52e7ea5b04
Author:    Chien Yang <chien.yang at oracle.com>
Date:      2015-03-18 16:53 -0700
URL:       http://hg.openjdk.java.net/openjfx/8u-dev/rt/rev/8a52e7ea5b04

RT-40303: [Mac] Fix compiler type cast warnings on GLContext.c
Post-commit

! modules/graphics/src/main/native-prism-es2/GLContext.c