dirname should not return an empty string

src/fs_acl.cpp

@@ -31,7 +31,7 @@ namespace fs
     dir_has_defaults(const std::string &fullpath_)
     {
       int rv;
-       std::string dirpath;
+      std::string dirpath;
 
       dirpath = fs::path::dirname(fullpath_);
 

src/fs_clonepath.cpp

@@ -73,7 +73,7 @@ namespace fs
       return 0;
 
     dirname = fs::path::dirname(relative_);
-    if(!dirname.empty())
+    if(dirname != "/")
       {
         rv = fs::clonepath(fromsrc_,tosrc_,dirname,return_metadata_errors_);
         if(rv == -1)