ShellPkg: Fix rm CWD protection to be better at catching similarly named directories.
ShellPkg: Fix rm CWD protection to be better at catching similarly named directories.

signed-off-by: jcarsey
reviewed-by: geekboy15a

git-svn-id: 5648d1bec6962b0a6d1d1b40eba8cf5cdb62da3d@12950 6f19259b-4bc3-4df7-8a09-765794883524

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2