From 356cf956f413bbf4c4e69a849350f8fc0194356a Mon Sep 17 00:00:00 2001
From: Mike Morris <michael.patrick.morris@gmail.com>
Date: Thu, 9 Oct 2014 15:16:01 -0400
Subject: [PATCH] XInitThreads

---
 common/headless_display.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/headless_display.cpp b/common/headless_display.cpp
index b183b0a50..bbb1c10f5 100644
--- a/common/headless_display.cpp
+++ b/common/headless_display.cpp
@@ -24,6 +24,10 @@ HeadlessDisplay::HeadlessDisplay() {
 #endif
 
 #if MBGL_USE_GLX
+    if (!XInitThreads()) {
+        throw std::runtime_error("Failed to XInitThreads");
+    }
+    
     x_display = XOpenDisplay(0);
 
     if (x_display == nullptr) {