clike: convert varname to lower before checking against properties
clike: convert varname to lower before checking against properties

Because the properties are already converted to lower.

pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson