build: fixup - comment explaining guard in front of ln
build: fixup - comment explaining guard in front of ln

bcwaldon/dex,sercand/dex,sercand/dex,andrewstuart/dex,zlabjp/dex,sercand/dex,jhuntoo/dex,andrewstuart/dex,Tecsisa/dex,bcwaldon/dex,andrewstuart/dex,Tecsisa/dex,zlabjp/dex,Tecsisa/dex,jhuntoo/dex,bcwaldon/dex,zlabjp/dex,jhuntoo/dex