Typo in variables-files flag argument doesn't cause a parse error.

function core_asan() {

        correct_python

  $PY buildscripts/scons.py -j8 \

      --link-model=dynamic \

      --allocator=system \

      --sanitize=address \

      --modules="" \

      --variables-files=etc/scons/mongodbtoolchaiun_stable_clang.vars \

      ICECC=icecc CCACHE=ccache \

      --ninja generate-ninja

}

IGNORING missing variable customization file etc/scons/mongodbtoolchaiun_stable_clang.vars