From 398faff9d421b21ff6e9340590e57a5e4563f122 Mon Sep 17 00:00:00 2001
From: Felix Kauselmann <2039670+selmf@users.noreply.github.com>
Date: Sun, 9 Nov 2014 01:42:51 +0100
Subject: [PATCH] Fix bug in Render::nextDoublePage() function that could lead
 to segfault if the last page is a double page. Also fixes related bug that
 could lead to advancing beyond the actual page count.

---
 YACReader/render.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/YACReader/render.cpp b/YACReader/render.cpp
index 080218c9..5f311657 100644
--- a/YACReader/render.cpp
+++ b/YACReader/render.cpp
@@ -850,12 +850,21 @@ void Render::nextPage()
 		emit pageChanged(currentIndex);
 	}
 	else
+	{
 		emit isLast();
+	}
 }
 void Render::nextDoublePage()
 {
 	int nextPage;
-	nextPage = currentIndex+2;
+	if (currentIndex +2 < (int)comic->numPages())
+	{
+		nextPage = currentIndex+2;
+	}
+	else
+	{
+		nextPage = currentIndex;
+	}	
 	if(currentIndex != nextPage)
 	{
 		comic->setIndex(nextPage);
@@ -864,6 +873,10 @@ void Render::nextDoublePage()
 		update();
 		emit pageChanged(currentIndex);
 	}
+	else
+	{
+		emit isLast();
+	}
 }
 	
 //si se solicita la página anterior, se calcula cuál debe ser en función de si se lee en modo a doble página o no.
@@ -882,7 +895,9 @@ void Render::previousPage()
 		emit pageChanged(currentIndex);
 	}
 	else
+	{
 		emit isCover();
+	}
 }
 
 void Render::previousDoublePage()