From b48eca9c9f3e485b8274afcb2c2b2d178190317e Mon Sep 17 00:00:00 2001
From: eidheim <eidheim@gmail.com>
Date: Tue, 5 Dec 2017 14:54:44 +0100
Subject: [PATCH] Minor optimization of Dispatcher::dispatcher handler

---
 src/dispatcher.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/dispatcher.cc b/src/dispatcher.cc
index 5bed8ea..5ad2d60 100644
--- a/src/dispatcher.cc
+++ b/src/dispatcher.cc
@@ -6,6 +6,8 @@ Dispatcher::Dispatcher() {
     std::vector<std::list<std::function<void()>>::iterator> its;
     {
       std::unique_lock<std::mutex> lock(functions_mutex);
+      if(functions.empty())
+        return;
       its.reserve(functions.size());
       for(auto it=functions.begin();it!=functions.end();++it)
         its.emplace_back(it);