inotify: server.walk(): use yield instead of for

iterate on subdir when the directory is found, not
once all the directories are found, since yield order doesn't matter

hgext/inotify/server.py

@@ -73,16 +73,15 b' def walk(repo, root):'
                             return
                     else:
                         dirs.append(name)
+                        path = join(root, name)
+                        if repo.dirstate._ignore(path):
+                            continue
+                        for result in walkit(path, False):
+                            yield result
                 elif kind in (stat.S_IFREG, stat.S_IFLNK):
                     files.append(name)
             yield fullpath, dirs, files
 
-            for subdir in dirs:
-                path = join(root, subdir)
-                if repo.dirstate._ignore(path):
-                    continue
-                for result in walkit(path, False):
-                    yield result
         except OSError, err:
             if err.errno not in walk_ignored_errors:
                 raise