hg: openjfx/jfx-dev/rt: 8220375: Fix ios build issues

[johan at lodgon.com]

Changeset: 4d10485201c7
Author:    jvos
Date:      2019-03-09 11:59 +0100
URL:       http://hg.openjdk.java.net/openjfx/jfx-dev/rt/rev/4d10485201c7

8220375: Fix ios build issues
Reviewed-by: kcr

! buildSrc/ios.gradle
! modules/javafx.graphics/src/main/native-prism-es2/ios/IOSWindowSystemInterface.m