Enha: wait for mime clue

handlers/handlers.go

@@ -94,6 +94,10 @@ func HandleExit(w http.ResponseWriter, r *http.Request) {
 		abortWithError(w, err.Error())
 		return
 	}
+	if fi.Room.IsRunning {
+		abortWithError(w, "cannot leave when game is running")
+		return
+	}
 	var creatorLeft bool
 	if fi.Room.CreatorName == fi.State.Username {
 		creatorLeft = true