Clang: don't enable -Wzero-as-null-pointer-constant on 5.0.0
Summary:
The clang compiler in Android NDK r15b, which has version 5.0.300080,
warns as follows:
warning: unknown warning option '-Wzero-as-null-pointer-constant'; did you mean '-Wint-to-void-pointer-cast'? [-Wunknown-warning-option]
Test Plan: Removing the option removes the warning
Reviewers: aacid, cgiboudeaux, apol
Reviewed By: cgiboudeaux
Subscribers: kde-frameworks-devel, kde-buildsystem
Tags: Frameworks, Build System
Differential Revision: https://phabricator.kde.org/D17714