bugfix: hdf5 depenedency: make sure variable is always defined
bugfix: hdf5 depenedency: make sure variable is always defined

becm/meson,jpakkane/meson,becm/meson,QuLogic/meson,QuLogic/meson,mesonbuild/meson,QuLogic/meson,QuLogic/meson,becm/meson,becm/meson,pexip/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,mesonbuild/meson,becm/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,becm/meson,pexip/meson,jpakkane/meson,jpakkane/meson,jpakkane/meson,pexip/meson,becm/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,QuLogic/meson,becm/meson,jpakkane/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,pexip/meson,jpakkane/meson,jpakkane/meson,becm/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,jpakkane/meson,becm/meson,pexip/meson