use str() on os.walk passing unicode can lead to UnicodeDecode errors when iterating

rhodecode/lib/cleanup.py

@@ -88,7 +88,7 b' class CleanupCommand(BasePasterCommand):'
 
         repos_location = RhodeCodeUi.get_repos_location()
         to_remove = []
-        for dn, dirs, f in os.walk(str(repos_location)):
+        for dn, dirs, f in os.walk(safe_str(repos_location)):
             for loc in dirs:
                 if REMOVED_REPO_PAT.match(loc):
                     to_remove.append([loc, self._extract_date(loc)])

rhodecode/lib/hooks.py

@@ -46,7 +46,7 b' def _get_scm_size(alias, root_path):'
         alias += '.'
 
     size_scm, size_root = 0, 0
-    for path, dirs, files in os.walk(root_path):
+    for path, dirs, files in os.walk(safe_str(root_path)):
         if path.find(alias) != -1:
             for f in files:
                 try: