Content server: When WSGI embedding fix handling of empty URL

src/cherrypy/_cpwsgi.py

@@ -298,6 +298,10 @@ class CPWSGIApp(object):
         You probably shouldn't call this; call self.__call__ instead,
         so that any WSGI middleware in self.pipeline can run first.
         """
+        # Changed by Kovid as the routes dispatcher cannot handle an empty
+        # PATH_INFO
+        if not environ.get('PATH_INFO', True):
+            environ['PATH_INFO'] = '/'
         return self.response_class(environ, start_response, self.cpapp)
 
     def __call__(self, environ, start_response):