From 3cb78fdfd818a7b9adcac42550cde0f489fd6b81 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Tue, 29 Sep 2015 15:30:08 -0700
Subject: [PATCH] Port fix for https://github.com/mapbox/earcut/issues/17

Refs https://github.com/mapbox/earcut.hpp/issues/6
---
 include/earcut.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/earcut.hpp b/include/earcut.hpp
index 29acc7e..87d4755 100644
--- a/include/earcut.hpp
+++ b/include/earcut.hpp
@@ -406,7 +406,7 @@ void Earcut<Coord, N>::splitEarcut(Node* start) {
     do {
         Node* b = a->next->next;
         while (b != a->prev) {
-            if (isValidDiagonal(a, b)) {
+            if (a->i != b->i && isValidDiagonal(a, b)) {
                 // split the polygon in two by the diagonal
                 auto c = splitPolygon(a, b);