i18n: Simplify code for detecting of untranslated id
i18n: Simplify code for detecting of untranslated id

digitalcraftsman/hugo,mdhender/hugo,gohugoio/hugo,gohugoio/hugo,mitchchn/hugo,anthonyfok/hugo,gohugoio/hugo,anthonyfok/hugo,fedelibre/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,fedelibre/hugo,mitchchn/hugo,anthonyfok/hugo,mdhender/hugo,digitalcraftsman/hugo,mdhender/hugo