cregistry/registry.c: remove unneeded write check, fixes testing with root privs, avoid race condition
cregistry/registry.c: remove unneeded write check, fixes testing with root privs, avoid race condition

git-svn-id: 620571fa9b4bd0cbce9a0cf901e91ef896adbf27@111331 d073be05-634f-4543-b044-5fe20cf6d1d6

danchr/macports-base,danchr/macports-base,macports/macports-base,macports/macports-base,neverpanic/macports-base,neverpanic/macports-base