meson warning "add_languages is missing native: assuming languages are wanted for both host and build" when cross compiling for Windows

When cross compiling dbus with meson for Windows on openSUSE/Leap meson prints the mentioned warning.

To reproduce

Steps to reproduce the behavior:

1. install meson, expat and glib2 development for mingw

sudo zypper ar https://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_15.4/windows%3Amingw%3Awin32.repo
sudo zypper install git mingw32-cross-gcc mingw32-libexpat-devel mingw32-glib2-devel mingw32-cross-meson ninja

2. checkout dbus source code

cd ~
git clone https://gitlab.freedesktop.org/dbus/dbus.git

3. build dbus

cd dbus
mingw32-meson build

Actual result

meson print this warning

meson.build:93: WARNING: add_languages is missing native:, assuming languages are wanted for both host and build.

Expected result

The message should not appear

Additional information

The same warning is printed when using the dbus provided build script in step 3:

cd dbus
builddir=dbus-meson-build ci_buildsys=meson ci_host=i686-w64-mingw32 tools/ci-build.sh