Fix build
Fix build

An inline function was declared extern in a mm file.

Change-Id: Ie9df92117c5b8f926b236a11cc3f66558d99a47d
Reviewed-by: Tor Arne Vestbø <455e994b14f100bcf4496f5548752c1ff193cc50@digia.com>

kobolabs/qtmacextras,kobolabs/qtmacextras