This PR fixes the errors and some warnings that are thrown when building prism_es2 for iOS using clang.
------------- Commit messages: - Fix errors and warnings building prism_es2 for iOS Changes: https://git.openjdk.org/jfx/pull/2064/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2064&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8377185 Stats: 16 lines in 5 files changed: 4 ins; 1 del; 11 mod Patch: https://git.openjdk.org/jfx/pull/2064.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/2064/head:pull/2064 PR: https://git.openjdk.org/jfx/pull/2064
