Add upstream patch to fix regression (rhbz#1413296)

doxygen-xmlgen-regression.patch

@@ -0,0 +1,24 @@
+From 0f02761a158a5e9ddbd5801682482af8986dbc35 Mon Sep 17 00:00:00 2001
+From: albert-github <albert.tests@gmail.com>
+Date: Wed, 4 Jan 2017 12:24:55 +0100
+Subject: [PATCH] Bug 776791 - [1.8.13 Regression] Segfault building the
+ breathe docs
+
+Protected against NULL pointer of variable al
+---
+ src/xmlgen.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/xmlgen.cpp b/src/xmlgen.cpp
+index fe95c7a..70e198a 100644
+--- a/src/xmlgen.cpp
++++ b/src/xmlgen.cpp
+@@ -620,7 +620,7 @@ static void generateXMLForMember(MemberDef *md,FTextStream &ti,FTextStream &t,De
+     if (md->isInline()) t << "yes"; else t << "no";
+     t << "\"";
+ 
+-    if (al->refQualifier!=RefQualifierNone)
++    if (al!=0 && al->refQualifier!=RefQualifierNone)
+     {
+       t << " refqual=\"";
+       if (al->refQualifier==RefQualifierLValue) t << "lvalue"; else t << "rvalue";

doxygen.spec

@@ -2,7 +2,7 @@ Summary: A documentation system for C/C++
 Name:    doxygen
 Epoch:   1
 Version: 1.8.13
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 # No version is specified.
 License: GPL+
@@ -12,6 +12,8 @@ Source0: ftp://ftp.stack.nl/pub/users/dimitri/%{name}-%{version}.src.tar.gz
 Source1: doxywizard.png
 Source2: doxywizard.desktop
 
+Patch0: https://github.com/doxygen/doxygen/pull/555.patch#/doxygen-xmlgen-regression.patch
+
 BuildRequires: perl
 BuildRequires: tex(dvips)
 BuildRequires: tex(latex)
@@ -130,6 +132,9 @@ desktop-file-install --dir=%{buildroot}%{_datadir}/applications %{SOURCE2}
 # intentionally left blank
 
 %changelog
+* Tue Jan 17 2017 Björn Esser <besser82@fedoraproject.org> - 1:1.8.13-2
+- Add upstream patch to fix regression (rhbz#1413296)
+
 * Thu Dec 29 2016 Orion Poplawski <orion@cora.nwra.com> - 1:1.8.13-1
 - Update to 1.8.13
 - Drop upstream patches