Slightly reduce the insane amounts of indentation in main http server response...

Slightly reduce the insane amounts of indentation in main http server response path, by 'continue'ing around a non-match or falling through

synapse/http/server.py

@@ -124,7 +124,9 @@ class JsonResource(HttpServer, resource.Resource):
             # and path regex match
             for path_entry in self.path_regexs.get(request.method, []):
                 m = path_entry.pattern.match(request.path)
-                if m:
+                if not m:
+                    continue
+
                 # We found a match! Trigger callback and then return the
                 # returned response. We pass both the request and any
                 # matched groups from the regex to the callback.